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High-strength magnesium alloy and die-casting method thereof

A magnesium alloy, high-strength technology, applied in the field of magnesium alloy materials, can solve the problems of limited application, coarsening of grains, deterioration of mechanical properties of alloys, etc., to achieve the effects of improving comprehensive performance, refining grains, and improving strength

Active Publication Date: 2018-06-19
仝仲盛
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Mg-Al alloys are the earliest and most widely used magnesium alloys. However, the crystallization and solidification temperature range of this kind of magnesium alloys is wide, and the grains tend to be coarse. During the solidification process, the coarse β -Mg17Al12 phase precipitates in a network shape along the grain boundary in the form of divorced eutectic, which leads to the deterioration of the mechanical properties of the alloy, which greatly limits the application of Mg-Al alloys as structural parts in the fields of automobiles and aircraft

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  • High-strength magnesium alloy and die-casting method thereof

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Embodiment 1

[0027] A die-casting method of a described high-strength magnesium alloy, comprising the following steps:

[0028] S1. Weigh magnesium ingots, zinc ingots, aluminum ingots, chromium ingots, manganese ingots, Mg-La master alloys, Mg-Ce master alloys, Mg-Nd master alloys, Mg-Yb master alloys, Mg- Y master alloy, VC powder, ZrC powder, WC powder, TiC powder, TiB 2 Powder, ZrB 2 powder;

[0029] Among them, the contents of La, Ce, Nd, Yb and Y elements in Mg-La master alloy, Mg-Ce master alloy, Mg-Nd master alloy, Mg-Yb master alloy and Mg-Y master alloy are all 10%;

[0030] Zinc ingot, aluminum ingot, chromium ingot, manganese ingot, Mg-La master alloy, Mg-Ce master alloy, Mg-Nd master alloy, Mg-Yb master alloy, Mg-Y master alloy, VC powder, ZrC powder, WC powder , TiC powder, TiB 2 Powder, ZrB 2 The mass ratio of powder and magnesium ingot is 1.5:0.1:0.1:0.1:1:1:2:0.5:0.5:0.1:0.3:0.2:0.1:0.1:0.3:91.2.

[0031] S2, the above mass ratio of VC, ZrC, WC, TiC, TiB 2 , ZrB 2 ...

Embodiment 2

[0040] A die-casting method for a high-strength magnesium alloy, comprising the following steps:

[0041] S1. Weigh magnesium ingots, zinc ingots, aluminum ingots, chromium ingots, manganese ingots, Mg-La master alloys, Mg-Ce master alloys, Mg-Nd master alloys, Mg-Yb master alloys, Mg- Y master alloy, VC powder, ZrC powder, WC powder, TiC powder, TiB 2 Powder, ZrB 2 powder;

[0042] Among them, the contents of La, Ce, Nd, Yb and Y elements in Mg-La master alloy, Mg-Ce master alloy, Mg-Nd master alloy, Mg-Yb master alloy and Mg-Y master alloy are all 10%;

[0043] Zinc ingot, aluminum ingot, chromium ingot, manganese ingot, Mg-La master alloy, Mg-Ce master alloy, Mg-Nd master alloy, Mg-Yb master alloy, Mg-Y master alloy, VC powder, ZrC powder, WC powder , TiC powder, TiB 2 Powder, ZrB 2 The mass ratio of powder and magnesium ingot is 2:0.5:0.3:0.1:1:3:3:0.8:0.8:0.1:0.4:0.3:0.2:0.2:0.4:79.06.

[0044] S2, the above mass ratio of VC, ZrC, WC, TiC, TiB 2 , ZrB 2 Mix, add e...

Embodiment 3

[0053] A die-casting method for a high-strength magnesium alloy, comprising the following steps:

[0054] S1. Weigh magnesium ingots, zinc ingots, aluminum ingots, chromium ingots, manganese ingots, Mg-La master alloys, Mg-Ce master alloys, Mg-Nd master alloys, Mg-Yb master alloys, Mg- Y master alloy, VC powder, ZrC powder, WC powder, TiC powder, TiB 2 Powder, ZrB 2 powder;

[0055] Among them, the contents of La, Ce, Nd, Yb and Y elements in Mg-La master alloy, Mg-Ce master alloy, Mg-Nd master alloy, Mg-Yb master alloy and Mg-Y master alloy are all 10%;

[0056] Zinc ingot, aluminum ingot, chromium ingot, manganese ingot, Mg-La master alloy, Mg-Ce master alloy, Mg-Nd master alloy, Mg-Yb master alloy, Mg-Y master alloy, VC powder, ZrC powder, WC powder , TiC powder, TiB 2 Powder, ZrB 2 The mass ratio of powder and magnesium ingot is 3:1:0.5:0.2:5:3:5:1:1:0.2:0.5:0.4:0.3:0.3:0.5:65.15.

[0057] S2, the above mass ratio of VC, ZrC, WC, TiC, TiB 2 , ZrB 2 Mixing, adding e...

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Abstract

The invention provides a high-strength magnesium alloy. The high-strength magnesium alloy comprises Zn, Al, Cr, Mn, La, Ce, Nd, Yb, Y, VC, ZrC, WC, TiC, TiB2, ZrB2 and Mg. The invention further provides a die-pressing method of the high-strength magnesium alloy. According to the high-strength magnesium alloy, rare earth elements like La are added in the alloy and have high solubility in the magnesium alloy, the dispersion strengthening effect and the great solution strengthening can both be achieved, besides, the rare earth elements can also have a high bonding effect with impurities elements,such as oxygen, hydrogen, nitrogen, sulfur and iron in a raw material alloy, gas and inclusions in the alloy can be reduced, the form of the inclusions is improved, the inclusions tend to be spheroidized, the inclusions and gas can be removed advantageously, and a melt purifying effect is also achieved; and in addition, the added rare earth elements differ in content, and the synergistic effect of the different rare earth elements greatly improves the strength and corrosion resistance of the magnesium alloy.

Description

technical field [0001] The invention relates to the technical field of magnesium alloy materials, in particular to a high-strength magnesium alloy and a die-casting method thereof. Background technique [0002] Magnesium alloys have the advantages of low density, high specific strength, low rigidity, large impact energy absorption, easy machining and easy recycling, and are currently being increasingly widely used in the fields of automobiles, aerospace, electronics, etc., and are considered It is an ideal material that effectively reduces weight, saves energy, is environmentally friendly, and is conducive to sustainable development. However, the low strength of magnesium alloy hinders its wide application range. Due to the low strength, the parts used in magnesium alloys such as automobiles have to increase the wall thickness. Therefore, improving the strength of magnesium alloys so that they have good comprehensive properties is one of the hot spots in the development of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C23/04C22C1/03C22C1/10C22F1/06C22C47/08C22C49/04C22C101/06
CPCC22C1/1036C22C23/04C22C47/08C22C49/04C22F1/06C22C1/1047
Inventor 仝仲盛
Owner 仝仲盛
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