Transparent model alloy in-situ observation device and method

Abstract

The invention discloses a transparent model alloy in-situ observation device and method, and belongs to the field of material phase change. The observation device comprises a heating module, an experiment module, a sample module, a CCD camera, an infrared thermometer, a limiting base, a hose, a first constant-temperature circulating oil bath and a second constant-temperature circulating oil bath. The first constant-temperature circulating oil bath, the second constant-temperature circulating oil bath and the experimental module are sequentially connected through hoses; the heating module and the experiment module are mounted on the limiting base; the sample module comprises high-temperature heat-conducting glass and a packaging unit, a clamping groove with the same size as the packaging module is formed in the top of the high-temperature heat-conducting glass, and the packaging unit is installed in the clamping groove of the high-temperature heat-conducting glass. According to the invention, the solidification process of the immiscible transparent model alloy under different temperature gradient conditions is realized, and the mechanism of the solidification process of the immiscible alloy can be simply and efficiently researched.

Description

Technical Field

[0001] This invention belongs to the field of material phase transformation, specifically relating to an in-situ observation device and method for transparent model alloys. Background Technology

[0002] During phase transformations in metallic materials, different temperature fields can be used to prepare new materials with varying microstructures. In a unidirectional temperature field, dispersed or banded structures can be obtained, while in a spherical temperature field, a "shell-core" structure can be achieved. These different microstructures obtained using varying temperature fields have excellent properties and can be widely used in industrial production. For example, immiscible Cu-Bi-Sn and Sn-Pb-Bi alloys with "shell-core" structures can be used as filler solders in electronic packaging, exhibiting good thermal conductivity and mechanical support. Typically, research on the preparation of new materials involves obtaining the solidification microstructure and then working backwards to deduce the solidification process. This results in the inability to know the actual microstructure transformation process and its details during solidification. While in-situ observation techniques such as transmission electron microscopy are available for observing alloy solidification processes, they are expensive. Therefore, researchers are increasingly turning to visualized, transparent model alloy systems. Currently, transparent model alloy in-situ observation devices for unidirectional temperature fields are widely used. However, no invention device for transparent model alloy in-situ observation of two-dimensional circular temperature fields that simulate spherical temperature fields has been found. Especially for immiscible alloys, the "shell-core" structure obtained by solidification in a spherical temperature field has excellent properties, but the solidification process is unknown and the microstructure is difficult to control. Summary of the Invention

[0003] To address the shortcomings of existing technologies, this invention provides an in-situ observation device and method for transparent model alloys, belonging to the field of material phase transformation. The observation device includes a heating module, an experimental module, a sample module, a CCD camera, an infrared thermometer, a limiting base, flexible hoses, a first constant-temperature circulating oil bath, and a second constant-temperature circulating oil bath. The first constant-temperature circulating oil bath, the second constant-temperature circulating oil bath, and the experimental module are sequentially connected via flexible hoses. The heating module and the experimental module are mounted on the limiting base. The sample module includes high-temperature thermally conductive glass and a packaging unit. The top of the high-temperature thermally conductive glass has a slot of the same size as the packaging module, and the packaging unit is installed in the slot of the high-temperature thermally conductive glass. This invention realizes the solidification process of immiscible transparent model alloys under different temperature gradients, enabling simple and efficient study of the mechanism of the solidification process of immiscible alloys.

[0004] A transparent model alloy in-situ observation device, the technical solution of which is as follows:

[0005] The transparent alloy in-situ observation device includes a heating module 1, an experimental module 2, a sample module 3, a limiting base 4, an infrared thermometer 5, a CCD camera 6, a flexible tube 13, a first constant-temperature circulating oil bath 7, and a second constant-temperature circulating oil bath 8. The limiting base 4 has two slots on its plane, the size of which matches the heating module 1 and the experimental module 2 respectively. The heating module 1 and the experimental module 2 are fixed in the slots of the limiting base 4. The heating module 1 and the experimental module 2 each have two horizontal channels in the middle, the size of which matches the sample module 3. The sample module 3 can move horizontally independently in the channels of the heating module 1 and the experimental module 2. The infrared thermometer 5 is placed on the ground directly below the experimental module 2. The CCD camera 6 is suspended directly above the experimental module 2. The first constant-temperature circulating oil bath 7 is connected to the heating module 1 through the flexible tube 13, and the second constant-temperature circulating oil bath 8 is connected to the experimental module 2 through the flexible tube 13.

[0006] Furthermore, the heating module 1 includes a first copper block 9, a second copper block 10, a sealing gasket 11, a cover plate 12, and a flexible hose 13; the first copper block 9 is hollowed out from the top, leaving a cylinder in the center; the cover plate 12 and the sealing gasket 11 are sequentially fixed to the top of the first copper block 9 with screws; the second copper block 10 is hollowed out from the bottom, leaving a cylinder in the center; the cover plate 12 and the sealing gasket 11 are sequentially fixed to the bottom of the second copper block 10 with screws; a horizontal through groove is opened on the top surface of the second copper block 10; the first copper block 9... The bottom end of the first copper block 9 and the top end of the second copper block 10 are attached to each other. The first copper block 9 and the second copper block 10 are connected by screws. The side walls of the first copper block 9 and the second copper block 10 are respectively provided with oil inlet and oil outlet. The oil outlet 22-1 of the first copper block 9 is connected to the oil inlet 21-2 of the second copper block 10 through a hose 13. The oil inlet 21-1 of the first copper block 9 is connected to the oil outlet of the first constant temperature circulating oil bath 7 through a hose 13. The oil outlet 22-2 of the second copper block 10 is connected to the oil inlet of the first constant temperature circulating oil bath 7 through a hose 13.

[0007] Furthermore, the experimental module 2 includes a third copper block 14, a fourth copper block 15, an opening sealing gasket 16, an opening cover plate 17, and a flexible tube 13. The third copper block 14 is hollowed out from its top, leaving a cylinder in the center with a through hole at the center. The opening sealing gasket 16 and the opening cover plate 17 both have through holes of the same size as the third copper block 14 at their tops, and are sequentially fixed to the top of the third copper block 14 with screws. Similarly, the fourth copper block 15 is hollowed out from its bottom, leaving a cylinder in the center with a through hole at the center. The opening cover plate 17 and the opening sealing gasket 16 are sequentially fixed to the top of the third copper block 14 with screws. The bottom of the fourth copper block 15 is fixed; a horizontal through groove is opened on the top surface of the fourth copper block 15; the bottom of the third copper block 14 and the top of the fourth copper block 15 are attached to each other, and the third copper block 14 and the fourth copper block 15 are connected by screws; the side walls of the third copper block 14 and the fourth copper block 15 have oil inlets and oil outlets, the oil outlet 22-3 of the third copper block 14 is connected to the oil inlet 21-4 of the fourth copper block 15 through a hose 13; the oil inlet 21-3 of the third copper block 14 is connected to the oil outlet of the second constant temperature circulating oil bath 8 through a hose 13, and the oil outlet 22-4 of the fourth copper block 15 is connected to the oil inlet of the second constant temperature circulating oil bath 8 through a hose 13.

[0008] Furthermore, the sample module 3 includes a high-temperature thermally conductive glass 3-1 and a packaging unit 3-2. The high-temperature thermally conductive glass 3-1 has a slot 3-3 on its top, and the size of the slot 3-3 is the same as that of the packaging unit 3-2. The packaging unit 3-2 is installed in the slot on the top of the high-temperature thermally conductive glass 3-1. The packaging unit 3-2 includes a sandwich spacer 19 and two glass slides 18. The sandwich spacer 19 is sandwiched between the two glass slides 18, forming a cavity between the two glass slides 18. The sandwich spacer 19 has an opening, and the sample is injected into the cavity from the opening. The two glass slides 18 are sealed around their perimeter with silicone.

[0009] Furthermore, the limiting base 4 includes adjustable support legs 20 and a heat-resistant plate 20-1; the adjustable support legs 20 are fixedly installed at the four corners of the heat-resistant plate 20-1; the top of the heat-resistant plate 20-1 has a heating module slot 4-1 and an experimental module slot 4-2; the heating module 1 is installed in the heating module slot 4-1, and the experimental module 2 is installed in the experimental module slot 4-2; the limiting base 4 ensures that the channel of the heating module 1 and the channel of the experimental module 2 are on the same horizontal plane and in the same direction.

[0010] The present invention proposes a transparent model alloy original observation experimental method, which includes the following steps:

[0011] Step S1: Inject the transparent model alloy sample solution into the encapsulation unit 3-2;

[0012] Step S2: Place the packaging unit 3-2 into the top slot 3-3 of the high-temperature thermally conductive glass 3-1, so that the packaging unit 3-2 moves synchronously with the high-temperature thermally conductive glass 3-1;

[0013] Step S3: Start the first constant temperature circulating oil bath 7 and the second constant temperature circulating oil bath 8, adjust the temperature of heating module 1 and experimental module 2, the temperature range is 58℃-100℃, and keep them warm.

[0014] Step S4: Push the high-temperature thermally conductive glass 3-1 containing the sample into the heating module 1 to melt the sample material in the encapsulation unit 3-2; to ensure the sample material is uniform, the high-temperature thermally conductive glass 3-1 needs to be kept at a constant temperature for 1-2 minutes after being pushed into the heating module 1.

[0015] Step S5: Start the infrared thermometer 5 and CCD camera 6 to measure the temperature change at the center of the sample during the experiment and observe the solidification process of the transparent model alloy.

[0016] Step S6: Quickly push the high-temperature thermally conductive glass 3-1 from the heating module 1 into the experimental module 2, and align the high-temperature thermally conductive glass slot 3-3 with the through hole at the top of the experimental module 2. Use the infrared thermometer 5 and CCD camera 6 to measure the temperature and observe the solidification of the transparent model alloy.

[0017] Optionally, in step S3, the temperature of the first constant-temperature circulating oil bath 7 can be set above the liquidus line of the selected transparent model alloy solution; the temperature of the second constant-temperature circulating oil bath 8 can be freely adjusted below the liquidus line of the transparent model alloy solution, and different temperature gradients can be achieved by changing the temperature of the second constant-temperature circulating oil bath 8.

[0018] Optionally, in step S5, the CCD camera 6 can be replaced with a high-powered microscope for observing microstructures. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the observation device of the present invention;

[0020] Figure 2 is a schematic diagram of the heating module of the present invention;

[0021] In Figure 2, Figure 2(a) is a schematic diagram of the heating module assembly; Figure 2(b) is a schematic diagram of the heating module exploded.

[0022] Figure 3 is a schematic diagram of the experimental module of the present invention;

[0023] In Figure 3, Figure 3(a) is a schematic diagram of the experimental module assembly; Figure 3(b) is an exploded view of the experimental module.

[0024] Figure 3(c) is a schematic diagram of the reverse side of the fourth copper block;

[0025] Figure 4 is a schematic diagram of the sample module of the present invention;

[0026] In Figure 4, Figure 4(a) is an exploded view of the packaging unit; Figure 4(b) is a three-dimensional view of the high-temperature thermally conductive glass.

[0027] Figure 5 This is a three-dimensional schematic diagram of the limiting base of the present invention;

[0028] Figure 6 This is a flowchart of the experimental method of the present invention.

[0029] In the diagram, 1 is the heating module; 2 is the experimental module; 3 is the sample module; 4 is the limiting base; 5 is the infrared thermometer; 6 is the CCD camera; 7 is the first constant-temperature circulating oil bath; 8 is the second constant-temperature circulating oil bath; 9 is the first copper block; 10 is the second copper block; 11 is the sealing gasket; 12 is the cover plate; 13 is the flexible hose; 14 is the third copper block; 15 is the fourth copper block; 16 is the perforated sealing gasket; 17 is the perforated cover plate; 18 is the glass slide; 19 is the interlayer gasket; and 20 is the adjustable support. Support leg; 3-1 is high-temperature thermally conductive glass; 3-2 is encapsulation unit; 20-1 is heat-resistant plate; 4-1 is heating module slot; 4-2 is experimental module slot; 21-1 is first copper block oil inlet; 22-1 is first copper block oil outlet; 21-2 is second copper block oil inlet; 22-2 is second copper block oil outlet; 21-3 is third copper block oil inlet; 22-3 is third copper block oil outlet; 21-4 is fourth copper block oil inlet; 22-4 is fourth copper block oil outlet. Detailed Implementation

[0030] To make the technical problems solved, technical solutions, and beneficial effects of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the embodiments described herein are for illustrative purposes only and are not intended to limit the scope of the invention.

[0031] This invention provides an in-situ observation device and method for transparent model alloys, belonging to the field of material phase transformation. The observation device includes a heating module, an experimental module, a sample module, a CCD camera, an infrared thermometer, a limiting base, flexible hoses, a first constant-temperature circulating oil bath, and a second constant-temperature circulating oil bath. The first constant-temperature circulating oil bath, the second constant-temperature circulating oil bath, and the experimental module are connected sequentially via flexible hoses. The heating module and the experimental module are mounted on the limiting base. The sample module includes high-temperature thermally conductive glass and a packaging unit. The top of the high-temperature thermally conductive glass has a slot of the same size as the packaging module, and the packaging unit is installed in the slot of the high-temperature thermally conductive glass. This invention realizes the solidification process of immiscible transparent model alloys under different temperature gradients, enabling simple and efficient study of the mechanism of the solidification process of immiscible alloys.

[0032] A transparent model alloy in-situ observation device, the technical solution of which is as follows:

[0033] like Figure 1As shown, the transparent alloy in-situ observation device includes a heating module 1, an experimental module 2, a sample module 3, a limiting base 4, an infrared thermometer 5, a CCD camera 6, a flexible tube 13, a first constant-temperature circulating oil bath 7, and a second constant-temperature circulating oil bath 8. The limiting base 4 has two slots on its plane, the size of which matches the heating module 1 and the experimental module 2 respectively. The heating module 1 and the experimental module 2 are fixed in the slots of the limiting base 4. The heating module 1 and the experimental module 2 each have two horizontal channels in the middle, the size of which matches the sample module 3. The sample module 3 can move horizontally independently in the channels of the heating module 1 and the experimental module 2. The infrared thermometer 5 is placed on the ground directly below the experimental module 2. The CCD camera 6 is suspended directly above the experimental module 2. The first constant-temperature circulating oil bath 7 is connected to the heating module 1 through the flexible tube 13, and the second constant-temperature circulating oil bath 8 is connected to the experimental module 2 through the flexible tube 13.

[0034] As shown in Figure 2, the heating module 1 includes a first copper block 9, a second copper block 10, a sealing gasket 11, a cover plate 12, and a flexible hose 13. The first copper block 9 is hollowed out from its top, leaving a cylindrical shape in the center. The cover plate 12 and the sealing gasket 11 are sequentially fixed to the top of the first copper block 9 with screws. The second copper block 10 is hollowed out from its bottom, leaving a cylindrical shape in the center. The cover plate 12 and the sealing gasket 11 are sequentially fixed to the bottom of the second copper block 10 with screws. A horizontal through-groove is formed on the top surface of the second copper block 10. The bottom of the first copper block 9 and the top of the second copper block 10 are attached to each other. The first copper block 9 and the second copper block 10 are connected by screws. The side walls of the first copper block 9 and the second copper block 10 are respectively provided with an oil inlet and an oil outlet. The oil outlet 22-1 of the first copper block 9 is connected to the oil inlet 21-2 of the second copper block 10 through a hose 13. The oil inlet 21-1 of the first copper block 9 is connected to the oil outlet of the first constant temperature circulating oil bath 7 through a hose 13. The oil outlet 22-2 of the second copper block 10 is connected to the oil inlet of the first constant temperature circulating oil bath 7 through a hose 13.

[0035] As shown in Figure 3, the experimental module 2 includes a third copper block 14, a fourth copper block 15, an opening sealing gasket 16, an opening cover plate 17, and a flexible tube 13. The third copper block 14 is hollowed out from its top, leaving a cylinder in the center with a through hole at the center. The opening sealing gasket 16 and the opening cover plate 17 both have through holes of the same size as the third copper block 14 at their tops, and are sequentially fixed to the top of the third copper block 14 with screws. Similarly, the fourth copper block 15 is hollowed out from its bottom, leaving a cylinder in the center with a through hole at the center. The opening cover plate 17 and the opening sealing gasket 16 are sequentially fixed to the top of the third copper block 14 with screws. The bottom of the fourth copper block 15 is fixed; a horizontal through groove is opened on the top surface of the fourth copper block 15; the bottom of the third copper block 14 and the top of the fourth copper block 15 are attached to each other, and the third copper block 14 and the fourth copper block 15 are connected by screws; the side walls of the third copper block 14 and the fourth copper block 15 have oil inlets and oil outlets, the oil outlet 22-3 of the third copper block 14 is connected to the oil inlet 21-4 of the fourth copper block 15 through a hose 13; the oil inlet 21-3 of the third copper block 14 is connected to the oil outlet of the second constant temperature circulating oil bath 8 through a hose 13, and the oil outlet 22-4 of the fourth copper block 15 is connected to the oil inlet of the second constant temperature circulating oil bath 8 through a hose 13.

[0036] As shown in Figure 4, the sample module 3 includes a high-temperature thermally conductive glass 3-1 and a packaging unit 3-2. The high-temperature thermally conductive glass 3-1 has a slot 3-3 on its top, and the size of the slot 3-3 is the same as that of the packaging unit 3-2. The packaging unit 3-2 is installed in the slot on the top of the high-temperature thermally conductive glass 3-1. The packaging unit 3-2 includes a sandwich spacer 19 and two glass slides 18. The sandwich spacer 19 is sandwiched between the two glass slides 18, forming a cavity between the two glass slides 18. The sandwich spacer 19 has an opening, and the sample is injected into the cavity from the opening. The two glass slides 18 are sealed around their perimeter with silicone.

[0037] like Figure 5 As shown, the limiting base 4 includes adjustable support legs 20 and a heat-resistant plate 20-1; the adjustable support legs 20 are fixedly installed at the four corners of the heat-resistant plate 20-1; the top of the heat-resistant plate 20-1 has a heating module slot 4-1 and an experimental module slot 4-2; the heating module 1 is installed in the heating module slot 4-1, and the experimental module 2 is installed in the experimental module slot 4-2; the limiting base 4 ensures that the channel of the heating module 1 and the channel of the experimental module 2 are on the same horizontal plane and in the same direction.

[0038] like Figure 6 As shown, the present invention proposes a transparent model alloy original observation experimental method, which includes the following steps:

[0039] Step S1: Inject the transparent model alloy sample solution into the encapsulation unit 3-2;

[0040] Step S2: Place the packaging unit 3-2 into the top slot 3-3 of the high-temperature thermally conductive glass 3-1, so that the packaging unit 3-2 moves synchronously with the high-temperature thermally conductive glass 3-1;

[0041] Step S3: Start the first constant temperature oil bath 7 and the second constant temperature oil bath 8, adjust the temperature of the heating module 1 and the experimental module 2, the temperature range is 58℃-100℃, and keep it at that temperature; the temperature of the first constant temperature oil bath 7 can be set above the liquidus line of the selected transparent model alloy solution; the temperature of the second constant temperature oil bath 8 can be freely adjusted below the liquidus line of the transparent model alloy solution, and different temperature gradients can be achieved by changing the temperature of the second constant temperature oil bath 8.

[0042] Step S4: Push the high-temperature thermally conductive glass 3-1 containing the sample into the heating module 1 to melt the sample material in the encapsulation unit 3-2; to ensure the sample material is uniform, the high-temperature thermally conductive glass 3-1 needs to be kept at a constant temperature for 1-2 minutes after being pushed into the heating module 1.

[0043] Step S5: Start the infrared thermometer 5 and CCD camera 6 to measure the temperature change at the center of the sample during the experiment and observe the solidification process of the transparent model alloy; the CCD camera 6 can be replaced by a high-powered microscope for observation of the microstructure.

[0044] Step S6: Quickly push the high-temperature thermally conductive glass 3-1 from the heating module 1 into the experimental module 2, and align the high-temperature thermally conductive glass slot 3-3 with the through hole at the top of the experimental module 2. Use the infrared thermometer 5 and CCD camera 6 to measure the temperature and observe the solidification of the transparent model alloy.

[0045] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A transparent model alloy in-situ observation device characterized by comprising: The utility model provides a heating module, experiment module, sample module, limiting base, infrared thermometer, CCD camera, hose, first constant temperature circulating oil bath and second constant temperature circulating oil bath are included, the limiting base plane is equipped with two clamping grooves, two clamping grooves size respectively with heating module and experiment module meet, and heating module and experiment module are fixed in the clamping groove of limiting base respectively, heating module and experiment module are equipped with two size with sample module in the middle horizontal direction channel, and sample module is independent in heating module channel and experiment module channel and moves horizontally, infrared thermometer is placed in the ground below experiment module, and CCD camera is hung in the top of experiment module, and first constant temperature circulating oil bath is connected with heating module through hose, and second constant temperature circulating oil bath is connected with experiment module through hose.

2. A transparent model alloy in-situ observation apparatus according to claim 1, characterized by The heating module includes a first copper block, a second copper block, a sealing gasket, a cover plate, and a hose; the first copper block is hollowed out from the top end, leaving a cylindrical body in the middle; the cover plate and the sealing gasket are fixed in order on the top end of the first copper block through screws; the second copper block is hollowed out from the bottom end, leaving a cylindrical body in the middle; the cover plate and the sealing gasket are fixed in order on the bottom end of the second copper block through screws; a through slot is opened horizontally on the surface of the top end of the second copper block; the bottom end of the first copper block is attached to the top end of the second copper block, and the first copper block and the second copper block are connected through screws; an oil inlet and an oil outlet are respectively opened on the side walls of the first copper block and the second copper block, and the oil outlet of the first copper block is connected to the oil inlet of the second copper block through a hose; the oil inlet of the first copper block is connected to the oil outlet of the first constant temperature circulating oil bath through a hose, and the oil outlet of the second copper block is connected to the oil inlet of the first constant temperature circulating oil bath through a hose.

3. A transparent model alloy in-situ observation apparatus according to claim 1, characterized by The experiment module includes a third copper block, a fourth copper block, a perforated sealing gasket, a perforated cover plate, and a hose; the third copper block is hollowed out from the top end, leaving a cylindrical body in the middle, and a through hole is opened in the center of the cylindrical body; the perforated cover plate and the perforated sealing gasket are both provided with a through hole of the same size as the third copper block on the top end, and the perforated cover plate and the perforated sealing gasket are fixed in order on the top end of the third copper block through screws; the fourth copper block is hollowed out from the bottom end, leaving a cylindrical body in the middle, and a through hole is opened in the center of the cylindrical body; the perforated cover plate and the perforated sealing gasket are fixed in order on the bottom end of the fourth copper block through screws; a through slot is opened horizontally on the surface of the top end of the fourth copper block; the bottom end of the third copper block is attached to the top end of the fourth copper block, and the third copper block and the fourth copper block are connected through screws; an oil inlet and an oil outlet are opened on the side walls of the third copper block and the fourth copper block, and the oil outlet of the third copper block is connected to the oil inlet of the fourth copper block through a hose; the oil inlet of the third copper block is connected to the oil outlet of the second constant temperature circulating oil bath through a hose, and the oil outlet of the fourth copper block is connected to the oil inlet of the second constant temperature circulating oil bath through a hose.

4. The transparent model alloy in-situ observation apparatus according to claim 1, characterized by The sample module includes a high-temperature heat-conducting glass and a packaging unit; a clamping groove is opened on the top of the high-temperature heat-conducting glass, and the size of the clamping groove is the same as that of the packaging unit; the packaging unit is installed in the clamping groove on the top of the high-temperature heat-conducting glass; the packaging unit includes a sandwich gasket and two glass slides; the sandwich gasket is clamped between the two glass slides, forming a cavity between the two glass slides; the sandwich gasket is provided with an opening, and the sample is injected into the cavity through the opening; the periphery of the two glass slides is sealed by silicone.

5. An in-situ transparent model alloy observation apparatus according to claim 1, wherein The limiting base comprises adjustable support legs and heat-resistant plates; the adjustable support legs are fixedly installed at the four corners of the heat-resistant plates; the top of the heat-resistant plates is provided with heating module clamping grooves and experimental module clamping grooves; the heating module is installed in the heating module clamping grooves, and the experimental module is installed in the experimental module clamping grooves; the limiting base ensures that the heating module channel and the experimental module channel are on the same horizontal plane and in the same direction.

6. A transparent model alloy original observation experimental method, characterized in that, The method comprises the following steps: Step S1, injecting a transparent model alloy sample solution into an encapsulation unit; Step S2, placing the encapsulation unit into a high-temperature heat-conducting glass top clamping groove, so that the encapsulation unit moves synchronously with the high-temperature heat-conducting glass; Step S3, starting a first constant-temperature circulating oil bath and a second constant-temperature circulating oil bath; adjusting the temperature of the heating module and the experimental module, and performing temperature preservation, with the temperature range being 58-100℃; Step S4, pushing the high-temperature heat-conducting glass loaded with the sample into the heating module, so that the sample material in the encapsulation unit is melted; in order to make the sample material uniform, the high-temperature heat-conducting glass needs to be preserved for 1-2 minutes after being pushed into the heating module; Step S5, starting an infrared temperature measuring instrument and a CCD camera, measuring the center temperature change of the sample during the experiment, and observing the solidification process of the transparent model alloy; Step S6, quickly pushing the high-temperature heat-conducting glass from the heating module into the experimental module, aligning the high-temperature heat-conducting glass clamping groove with the experimental module top through hole, and measuring the solidification temperature and observing the solidification of the transparent model alloy through the infrared temperature measuring instrument and the CCD camera.

7. A transparent model alloy according to claim 6, characterized in that In step S3, the first constant-temperature circulating oil bath temperature is set above the liquidus of the selected transparent model alloy solution; the second constant-temperature circulating oil bath temperature is freely adjusted below the liquidus of the transparent model alloy solution, and different temperature gradients are realized by changing the temperature of the second constant-temperature circulating oil bath.

8. A transparent model alloy according to claim 6, characterized in that, In step S5, the CCD camera can be replaced by a high-power microscope to observe the microstructure.

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