Multi-component small-amount high-strength plasticity magnesium alloy and large-rolling-reduction short-process preparation method thereof

A large reduction, magnesium alloy technology, applied in the direction of metal rolling, metal rolling, metal processing equipment, etc., can solve the problems of complicated process flow of deformed magnesium alloy, few types of added alloy elements, and difficult preparation of magnesium alloy sheet. , to achieve the effect of improving the complex rolling process, small rolling cracks, and promoting non-base surface slippage

Active Publication Date: 2019-03-22
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, the existing magnesium alloy grades are few, the commonly used commercial magnesium alloys have high alloy content, and there are few types of alloying elements added, and the process of preparing deformed magnesium alloys is cumbersome, especially the preparation of magnesium alloy sheets is difficult and com

Method used

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  • Multi-component small-amount high-strength plasticity magnesium alloy and large-rolling-reduction short-process preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Take Mg-1Zn-1Sn-0.2Ca-0.2Y alloy as an example, according to the mass percentage of the alloy for batching:

[0037] (1) Pass the shielding gas into the melting furnace, the shielding gas can be argon or SF 6 And CO 2 Put the pure magnesium ingot into the crucible and heat and melt it at 700℃;

[0038] (2) After the magnesium ingot is melted, the temperature is lowered to 680°C, and slagging removes impurities and oxide layers on the surface of the melt to obtain a pure magnesium melt;

[0039] (3) After degassing and refining the above-mentioned pure magnesium melt, pure zinc and pure tin are added to the pure magnesium melt to obtain a magnesium alloy melt;

[0040] (4) After holding the above-mentioned magnesium alloy melt at 700°C for 10-20 minutes, add magnesium-calcium and magnesium-yttrium master alloys to the magnesium alloy solution. After it is completely melted, fully stir the melt and blow from the bottom of the melt. After refining with argon gas, remove surface im...

Embodiment 2

[0049] Take Mg-0.8Zn-1.5Sn-0.3Ca-0.08Y alloy as an example, and do the batching according to the mass percentage of the alloy:

[0050] (1) Pass the shielding gas into the melting furnace, the shielding gas can be argon or SF 6 And CO 2 Put the pure magnesium ingot into the crucible and heat and melt it at 700℃;

[0051] (2) After the magnesium ingot is melted, the temperature is lowered to 680°C, and the impurities and oxide layer on the surface of the melt are removed by slagging to obtain a pure magnesium melt;

[0052] (3) After degassing and refining the above-mentioned pure magnesium melt, pure zinc and pure tin are added to the pure magnesium melt to obtain a magnesium alloy melt;

[0053] (4) After holding the above magnesium alloy melt at 700°C for 10-20 minutes, add magnesium-calcium and magnesium-yttrium master alloys to the magnesium alloy solution. After it is completely melted, stir the melt sufficiently and blow from the bottom of the melt. After refining with argon, th...

Embodiment 3

[0061] Take the Mg-1.5Zn-0.8Sn-0.08Ca-0.3Y alloy as an example, according to the mass percentage of the alloy for batching:

[0062] (1) Pass the shielding gas into the melting furnace, the shielding gas can be argon or SF 6 And CO 2 Put the pure magnesium ingot into the crucible and heat and melt it at 700℃;

[0063] (2) After the magnesium ingot is melted, the temperature is lowered to 680°C, and the impurities and oxide layer on the surface of the melt are removed by slagging to obtain a pure magnesium melt;

[0064] (3) After degassing and refining the above-mentioned pure magnesium melt, pure zinc and pure tin are added to the pure magnesium melt to obtain a magnesium alloy melt;

[0065] (4) After holding the above magnesium alloy melt at 700°C for 10-20 minutes, add magnesium-calcium and magnesium-yttrium intermediate alloys to the magnesium alloy solution, and also add magnesium-zirconium, magnesium-gadolinium, and magnesium-manganese intermediates One or more of the alloys, a...

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Abstract

The invention discloses a multi-component small-amount high-strength plasticity magnesium alloy and a large-rolling-reduction short-process preparation method thereof. The multi-component small-amounthigh-strength plasticity magnesium alloy is prepared from the chemical components in percentage by mass: 0.8-1.5% of zinc, 0.8-1.5% of tin, 0.08-0.4% of calcium, 0.08-0.8% of yttrium and the balanceof magnesium and an adding element. The adding element is one or more of zirconium, gadolinium and manganese, and the adding element is prepared from the components in percentage by mass: 0.05-0.2% ofzirconium, 0.05-0.2% of gadolinium and 0.05-0.3% of manganese. The large-rolling-reduction short-process preparation method of the alloy comprises three steps of sub-rapid solidification, rolling andannealing. A high solid solution casting-rolling blank is directly obtained, the single-pass or less-pass large press quantity deformation can be realized, solid solution processing and multi-pass rolling complex process before rolling of a conventional magnesium alloy are eliminated, the preparation process of a magnesium rolled plate is greatly shortened, the tensile strength of the obtained multi-component small-amount magnesium alloy rolled plate after annealing is greater than 250 MPa, the elongation is greater than 25%, the room-temperature mechanical property is excellent, no obvious edge cracking is caused, and the yield is high.

Description

Technical field [0001] The invention relates to the field of metal materials, in particular to a multi-element small amount high-strength plastic magnesium alloy and a method for preparing the magnesium alloy with large reduction and short flow. Background technique [0002] As the lightest engineering structural metal material, magnesium alloy has the advantages of high specific strength, high electrical and thermal conductivity, high damping and shock absorption, high electrostatic shielding, and good regeneration and recycling. It is used in aerospace, automotive and communications fields. Favored. Especially in terms of automobile lightweight, increasing the utilization rate of magnesium alloy will significantly reduce automobile weight, save fuel and reduce CO 2 Emissions, to achieve the effect of energy saving and consumption reduction. [0003] Magnesium alloy sheet is currently the most promising product in the field of deep processing. The rolled magnesium alloy refines ...

Claims

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Application Information

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IPC IPC(8): C22C23/04C22C23/00C22C1/02C22F1/06C21D9/00B22D11/06B22D11/11B21B3/00B21B27/08
CPCB21B3/003B21B27/08B21B2027/083B22D11/06B22D11/11C21D9/0081C22C1/02C22C23/00C22C23/04C22F1/06
Inventor 王珵宁宏王慧远查敏杨治政李志刚马品奎程秀明花珍铭刘珂
Owner JILIN UNIV
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