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A kind of high-strength toughness deformation magnesium alloy and preparation method thereof

A technology for deforming magnesium alloys and magnesium alloys, applied in the field of magnesium alloys, can solve problems such as increasing costs, and achieve the effects of improving corrosion resistance, improving alloy plasticity, and being easy to age harden

Active Publication Date: 2019-05-28
BEIHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In recent years, in order to adapt to the application of magnesium alloys in the lightweight of automobiles, a large number of high-strength and tough magnesium alloys have been developed, mainly rare earth magnesium alloys. Although very high strength and toughness have been obtained, the cost has inevitably increased.

Method used

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  • A kind of high-strength toughness deformation magnesium alloy and preparation method thereof
  • A kind of high-strength toughness deformation magnesium alloy and preparation method thereof
  • A kind of high-strength toughness deformation magnesium alloy and preparation method thereof

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preparation example Construction

[0038] The present invention proposes a method for preparing a high-strength toughness deformed magnesium alloy, which includes the following preparation steps:

[0039] Steps to dose by target ingredients;

[0040] According to mass percentage, adopt industrial pure aluminum (Al), industrial pure zinc (Zn), Mg-20Ca master alloy and Mg-5Mn master alloy and industrial pure magnesium (Mg) to carry out batching, obtain first raw material and second raw material respectively, stand-by;

[0041] The first raw material is industrial pure magnesium (Mg);

[0042] The second raw material is industrial pure aluminum (Al), industrial pure zinc (Zn), Mg-20Ca master alloy and Mg-5Mn master alloy;

[0043] the step of melting the ingot;

[0044] Step 21, preheat the crucible; place the graphite crucible in a resistance furnace, raise the temperature to 320°C-350°C at a heating rate of 5°C-10°C / min, keep it warm for 10-20min, and evenly sprinkle the first RJ- 6 materials; the mass perce...

Embodiment 1

[0059] Preparation of heat treatable strengthened Mg-4Al-4Zn-2Ca-0.4Mn high-strength wrought magnesium alloy in which the Mg-Al-Ca phase of solid solution Zn is the main reinforcing phase, and its target composition and mass percentage are: Al 4%, Zn 4% , Ca 2%, Mn 0.4% and the balance is Mg, the total mass is 100%.

[0060] The method for preparing Mg-4Al-4Zn-2Ca-0.4Mn high-strength wrought magnesium alloy is as follows:

[0061] Steps to dose ingredients by target;

[0062] According to mass percentage, industrial pure aluminum (Al), industrial pure zinc (Zn), Mg-20Ca master alloy (produced by Wenxi County Xinglin Nonferrous Metal Materials Co., Ltd.) and Mg-5Mn master alloy (selected from Wenxi County Xinglin Lin Nonferrous Metal Materials Co., Ltd.) and commercially pure magnesium (Mg) are batched, and the first raw material and the second raw material are obtained respectively, and are for use;

[0063] The first raw material is industrial pure magnesium (Mg);

[0064]...

Embodiment 2

[0079] Preparation of heat treatable strengthened Mg-6Al-4Zn-3Ca-0.4Mn high-strength wrought magnesium alloy in which the Mg-Al-Ca phase of solid solution Zn is the main reinforcing phase, and its target composition and mass percentage are: Al 6%, Zn 4% , Ca 3%, 0.4% Mn and the balance is Mg, the total mass is 100%.

[0080] The method for preparing Mg-6Al-4Zn-3Ca-0.4Mn high-strength wrought magnesium alloy is as follows:

[0081] Steps to dose ingredients by target;

[0082] According to mass percentage, adopt industrial pure aluminum (Al), industrial pure zinc (Zn), Mg-20Ca master alloy, Mg-5Mn master alloy and industrial pure magnesium (Mg) to carry out batching, obtain first raw material and second raw material respectively, stand-by;

[0083] The first raw material is industrial pure magnesium (Mg);

[0084] The second raw material is industrial pure aluminum (Al), industrial pure zinc (Zn), Mg-20Ca master alloy and Mg-5Mn master alloy;

[0085] the step of melting th...

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Abstract

The invention discloses a high strength and toughness deformation magnesium alloy and a preparation method thereof. The components of the magnesium alloy comprise 3wt%-8wt% aluminum, 1wt%-6wt% zinc and 0.5wt%-3wt% calcium, less than or equal to 0.5wt% of manganese and the balance magnesium. The magnesium alloy can be subjected to smelting ingot casting and is subjected to reverse extruding after micro deformation amount upsetting, or solid dissolving or ageing treatment is added, and the novel high strength and toughness magnesium alloy with the stretching yielding strength being 180-320 MPa,the tensile strength being 330-400 MPa and the extending rate being 10%-25% can be obtained.

Description

technical field [0001] The invention relates to a magnesium alloy, more particularly, to a heat-treatable and strengthened high-strength and tough deformable magnesium alloy. The new magnesium alloy can be used as a potential commercial heat-resistant high-strength and toughness magnesium alloy or high-strength and toughness magnesium alloy. Background technique [0002] Magnesium alloy is a low-density metal material, but due to its hcp structure, magnesium alloy as an engineering structure material has poor plasticity matching. At present, after deformation and heat treatment, the yield strength of AZ series magnesium alloys widely used in business is generally not more than 180MPa, the tensile strength is not more than 300MPa, the elongation is about 12%, and the yield ratio is generally 0.5-0.7. Another type of commercial ZK series magnesium alloy, such as ZK60 extruded bar T5 state yield strength is 280MPa, tensile strength is 350MPa, elongation is 11%, and yield ratio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C23/00C22C23/02C22C23/04C22C1/03C22F1/06
CPCC22C1/03C22C23/00C22C23/02C22C23/04C22F1/06
Inventor 肖文龙王方马朝利李芸李响樊斌斌
Owner BEIHANG UNIV
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