Low-cost multi-component heat-resistant magnesium alloy and preparation method of magnesium alloy

A magnesium alloy, low-cost technology, applied in the field of metal materials, can solve the problems of high cost of alloys that limit wide application, damage mechanical properties, increase alloy prices and other problems, achieve simple melting and heat treatment processes, improve high-temperature properties, alloy mechanical properties and The effect of improving heat resistance

Inactive Publication Date: 2015-06-10
HENAN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

A series of heat-resistant magnesium alloys such as Mg-Al-Si, Mg-Al-RE, Mg-Al-Ca, Mg-Al-Sn, Mg-Al-Ca-RE, and Mg-Al-Th have been developed successively. Among the various grades of heat-resistant magnesium alloys that have been developed, very few have actually been applied, such as the AE42 alloy in the Mg-Al-RE series and the WE43 and WE54 in the Mg-Y-Nd series. The rare earth elements in the alloy greatly increase the price of the alloy, and the high cost of the alloy limits its wide application. The AX51 in the Mg-Al-Ca series is limited by the casting performance of the alloy and the easy formation of hot cracks, etc.
For the Si-containing AS41 and AS21 alloys, there are thick Chinese character-shaped Mg in the structure. 2 Si phase, impairing its mechanical properties

Method used

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  • Low-cost multi-component heat-resistant magnesium alloy and preparation method of magnesium alloy
  • Low-cost multi-component heat-resistant magnesium alloy and preparation method of magnesium alloy
  • Low-cost multi-component heat-resistant magnesium alloy and preparation method of magnesium alloy

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A low-cost multi-component heat-resistant magnesium alloy, the components and their weight percentages are: Al is 4.85%, Zn is 0.82%, Sr is 0.74%, Ca is 0.46%, Sn is 1.23%, Sb is 1.27%, Mn is 0.26%, Bi is 0.38%, Si is 0.84%, and the balance is Mg;

[0021] A method for preparing a heat-resistant magnesium alloy as described above, comprising the following steps:

[0022] 1) Weigh pure magnesium ingots, pure aluminum ingots, pure zinc particles, Mg-Sr master alloys, Mg-Ca master alloys, pure tin particles, pure antimony, Al-Mn master alloys, pure bismuth and Al- Si master alloy, spare;

[0023] 2) The pure magnesium ingot, pure aluminum ingot, pure zinc grain, Mg-Sr master alloy, Mg-Ca master alloy, pure tin grain, pure antimony, Al-Mn master alloy, pure bismuth and Al -Si master alloys were dried and preheated at 180°C for 2.5 hours, and set aside;

[0024] 3) Put the preheated pure magnesium ingots, pure aluminum ingots, pure zinc particles, pure tin particles, pure...

Embodiment 2

[0027] A low-cost multi-component heat-resistant magnesium alloy, the components and their weight percentages are: Al is 5.26%, Zn is 1.12%, Sr is 0.78%, Ca is 0.61%, Sn is 1.43%, Sb is 0.87%, Mn is 0.17%, Bi is 0.29%, Si is 0.57%, and the balance is Mg;

[0028] A method for preparing a heat-resistant magnesium alloy as described above, comprising the following steps:

[0029] 1) Weigh pure magnesium ingots, pure aluminum ingots, pure zinc particles, Mg-Sr master alloys, Mg-Ca master alloys, pure tin particles, pure antimony, Al-Mn master alloys, pure bismuth and Al- Si master alloy, spare;

[0030] 2) The pure magnesium ingot, pure aluminum ingot, pure zinc grain, Mg-Sr master alloy, Mg-Ca master alloy, pure tin grain, pure antimony, Al-Mn master alloy, pure bismuth and Al -Si master alloys were dried and preheated at 185°C for 3 hours, and set aside;

[0031] 3) Put the preheated pure magnesium ingots, pure aluminum ingots, pure zinc particles, pure tin particles, pure a...

Embodiment 3

[0034] A low-cost multi-component heat-resistant magnesium alloy, the components and their weight percentages are: Al is 6.39%, Zn is 0.64%, Sr is 0.85%, Ca is 0.68%, Sn is 1.39%, Sb is 1.06%, Mn is 0.34%, Bi is 0.56%, Si is 0.76%, and the balance is Mg;

[0035] A method for preparing a heat-resistant magnesium alloy as described above, comprising the following steps:

[0036] 1) Weigh pure magnesium ingots, pure aluminum ingots, pure zinc particles, Mg-Sr master alloys, Mg-Ca master alloys, pure tin particles, pure antimony, Al-Mn master alloys, pure bismuth and Al- Si master alloy, spare;

[0037] 2) The pure magnesium ingot, pure aluminum ingot, pure zinc grain, Mg-Sr master alloy, Mg-Ca master alloy, pure tin grain, pure antimony, Al-Mn master alloy, pure bismuth and Al -Si master alloys were dried and preheated at 195°C for 4 hours, and set aside;

[0038] 3) Put the preheated pure magnesium ingots, pure aluminum ingots, pure zinc particles, pure tin particles, pure a...

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Abstract

The invention provides a low-cost multi-component heat-resistant magnesium alloy and a preparation method of the magnesium alloy. The low-cost multi-component heat-resistant magnesium alloy comprises the following components in percentage by weight: 4.2-6.7% of Al, 0.5-1.2% of Zn, 0.7-0.9% of Sr, 0.2-0.8% of Ca, 1.1-1.5% of Sn, 0.8-1.3% of Sb, 0.05-0.4% of Mn, 0.2-0.6% of Bi, 0.4-0.9% of Si and the balance of Mg. According to the low-cost multi-component heat-resistant magnesium alloy, a right amount of low-cost alloy elements such as Sr, Ca, Sn, Sb, Mn, Bi and Si are introduced; the high-temperature performance of the magnesium alloy can be remarkable improved; the application range of the magnesium alloy can be expanded; the magnesium alloy is low in cost, simple in smelting and heat treatment process and uniform in microscopic structure; the mechanical performance and the heat resistance of the alloy can be remarkably improved; after the alloy is solidified and aged, the maximum room-temperature tensile strength reaches 278MPa; the maximum tensile strength at 150 DEG C reaches 236MPa; the maximum tensile strength at 200 DEG C reaches 207MPa.

Description

technical field [0001] The invention relates to the field of metal materials, in particular to a low-cost multi-component heat-resistant magnesium alloy and a preparation method thereof. Background technique [0002] Magnesium and magnesium alloys, as the lightest metal structural materials in engineering applications at the present stage, have low density, high specific strength and specific stiffness, excellent damping and shock absorption performance, and good heat dissipation, and have excellent performance in many fields. Application potential, especially in aerospace, automobiles and motorcycles, high-speed light rail trains and 3C products, it has irreplaceable application advantages. [0003] At present, commercial magnesium alloys are mainly divided into two categories: cast magnesium alloys and wrought magnesium alloys. Among cast magnesium alloys, the AZ series is the most widely used due to its excellent mechanical properties at room temperature, good fl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C23/02C22C1/03C22F1/06
CPCC22C1/03C22C23/02C22F1/06
Inventor 李全安陈君张清李梅菊李武会周耀袁景龙
Owner HENAN UNIV OF SCI & TECH
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