Flowability testing method and device for zirconium base block amorphous alloy melt

A technology of amorphous alloy and testing device, applied in the field of zirconium-based bulk amorphous alloy melt fluidity testing and device field

Active Publication Date: 2013-06-12
YANSHAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in the past 20 years, people's research on bulk amorphous alloys has mostly focused on the exploration of amorphous alloy systems, the ability to form amorphous crystals, and the establishment of various composition criteria; in bulk amorphous alloys In terms of preparation technology, the most used technology is the combination of non-consumable electric arc furnace melting and metal copper mold casting (hereinafter referred to as non-consumable electric arc furnace melting copper mold casting) and non-consumable electric arc furnace melting and quartz tube water quenching. Combined technology (hereinafter referred to as non-consumable electric arc furnace smelting quartz tube water quenching), the bulk amorphous alloys prepared are mostly small samples with a diameter of several millimeters, which are mainly used for the development of amorphous bulk amorphous alloys. Research on basic theories such as crystal formation ability, stability of amorphous alloys, physical properties of amorphous alloys, deformation behavior and fracture mechanism, etc. There are few reports on the casting of bulk amorphous alloys for engineering applications

Method used

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  • Flowability testing method and device for zirconium base block amorphous alloy melt
  • Flowability testing method and device for zirconium base block amorphous alloy melt
  • Flowability testing method and device for zirconium base block amorphous alloy melt

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] 500 grams of Zr to be melted in a non-consumable arc melting furnace 55 Ti 11 Cu 8 Ni 8 be 18 Put the bulk amorphous alloy ingot into the alumina ceramic crucible (manufacturer: Haili, Kaiping District, Tangshan City) of an intermediate frequency induction vacuum melting furnace (model: YZZ-multifunctional melting furnace, manufacturer: Shenyang Scientific Instrument Co., Ltd., Chinese Academy of Sciences) De pottery factory), close the furnace lid. Adjust the height of the stainless steel suction casting tube in the fluidity testing device through the lifting and locking mechanism and lock it. Then connect the intermediate frequency induction vacuum melting furnace and the cooling circulating water channel of the stainless steel suction casting pipe in the fluidity testing device, close all valves, switch on the main power supply of the vacuum mechanism, and turn on the mechanical pump to connect the melting furnace body and the fluidity testing device When the va...

Embodiment 2

[0036] Take 500 grams of Zr melted in a non-consumable arc melting furnace 42 Ti 13 Cu 12.5 Ni 10 be 22.5 Bulk amorphous alloy ingot, repeat the operation of example 1, respectively obtain the bulk amorphous alloy cast bar that different lengths are coated with stainless steel tube, as image 3 As shown, the stainless steel tube that removes the outer layer of the bulk amorphous alloy cast rod by turning is used to test the amorphous structure, which is the flow length of the zirconium-based bulk amorphous alloy melt tested under different process parameters, The specific values ​​are as follows:

[0037] Melt temperature 800°C, argon pressure 0.02MPa:

[0038] Melt temperature 850°C, argon pressure 0.025MPa:

[0039] Melt temperature 900°C, argon pressure 0.03MPa:

[0040] Through X-ray diffraction analysis and differential scanning calorimetry analysis (DSC analysis), the microstructure of the obtained zirconium-based bulk amorphous alloy is an amorphous structu...

Embodiment 3

[0042] Take 500 grams of Zr melted in a non-consumable arc melting furnace 38 Ti 14 Cu 13 Ni 11 be 24 Bulk amorphous alloy ingot, repeat the operation of example 1, respectively obtain the bulk amorphous alloy cast bar that different lengths are coated with stainless steel tube, as image 3 As shown, the stainless steel tube that removes the outer layer of the bulk amorphous alloy cast rod by turning is used to test the amorphous structure, which is the flow length of the zirconium-based bulk amorphous alloy melt tested under different process parameters, The specific values ​​are as follows:

[0043] Melt temperature 800°C, argon pressure 0.02MPa:

[0044] Melt temperature 850°C, argon pressure 0.025MPa:

[0045] Melt temperature 900°C, argon pressure 0.03MPa:

[0046] Through X-ray diffraction analysis and differential scanning calorimetry analysis (DSC analysis), the microstructure of the obtained zirconium-based bulk amorphous alloy is an amorphous structure, ...

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Abstract

The invention relates to a flowability testing method and a device for a zirconium base block amorphous alloy melt. The method mainly comprises the steps that a medium-frequency induction vacuum melting furnace and an alumina ceramic crucible are adopted for alloy melting, the flowability testing device for the block amorphous alloy melt conducts suction casting on the molten block amorphous alloy melt under technological conditions of different temperatures, different pressures and different circular pipe diameters, block amorphous alloy cast rods in different flow lengths are obtained, and the flowability of an alloy can be known through the lengths of the amorphous alloy cast rods. According to the method and the device, the temperature of the block amorphous alloy melt and the pressure in a furnace body can be effectively controlled, the zirconium base block amorphous alloy cast rods in different diameters and different lengths can be subjected to suction casting simultaneously under the same technological condition, and the testing efficiency is high.

Description

Technical field: [0001] The invention relates to a method and a device for testing the flow and filling characteristics of metal solidification and alloy melt in the field of material science and engineering. Background technique: [0002] The main feature of amorphous alloys is that the three-dimensional space of atoms is arranged in a topologically disordered manner. It has no defects such as grain boundaries and stacking faults in its structure, but the arrangement of atoms is not completely disordered like ideal gases. Amorphous alloys are characterized by metal bonds. Although there is no long-range order, they maintain short-range order in the range of several lattice constants [Document 1, edited by Wang Yihe and Yang Yingshan. Amorphous alloys. Metallurgy Industrial Press. Beijing. 1989.6, pp9]. Theoretically, if the alloy melt is 10 4 ℃-10 6 When solidified at a cooling rate of °C / s or faster, amorphous alloys can be obtained. But in the actual preparation of am...

Claims

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Application Information

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IPC IPC(8): B22D18/06C22C45/10G01N11/04G01N11/08
Inventor 马明臻刘日平马德强张新宇
Owner YANSHAN UNIV
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