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High-strength magnesium alloy and preparation method thereof

A magnesium alloy, high-strength technology, applied in the field of alloys, can solve the problems that the strength of magnesium alloys cannot meet the requirements, etc., achieve high strength and reduce production costs

Active Publication Date: 2016-03-23
KA SHUI TECH HUIZHOU CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The reason is that the strength of the magnesium alloy cannot meet the requirements of the load-bearing parts of the car.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] (1) Ingredients: Weigh 71kg of metal Mg; weigh 7kg of metal Al intermediate alloy according to 6.5% mass content and 8% burning loss rate; weigh 7kg of metal Al intermediate alloy according to 0.4% mass content and 25% burning loss rate Alloy 2kg, wherein the Y element accounts for 25% of the alloy; take 9.9kg of the Mg-Ca master alloy according to a mass content of 1.8% and a burning loss rate of 20%, wherein the Ca element accounts for 20% of the alloy; by 0.6 % mass content and 20% burning rate take by weighing Mg-Sr master alloy 3.6kg, wherein Sr element accounts for 20% of the alloy ratio; The burning loss rate takes 11.5kg of Mg-Mn master alloy, wherein the proportion of Mn element in the alloy is 5%;

[0056] (2) Preheating: Preheat the above materials in an oven to 310°C;

[0057] (3) Melting: Put the preheated metal Mg into a crucible preheated at 400°C, and raise the temperature inside the crucible to 730°C under the protection of nitrogen and sulfur hexafluo...

Embodiment 2

[0064] (1) Ingredients: Weigh 76.7kg of metal Mg; weigh 7.8kg of metal Al master alloy with a mass content of 7.2% and a burning loss rate of 8%; weigh Mg at a mass content of 0.1% and a burning loss rate of 25% -Y master alloy 0.5kg, wherein Y element accounts for 25% of the alloy ratio; according to 2.1% mass content and 20% burning rate, take Mg-Ca master alloy 11.6kg, wherein Ca element accounts for 20% of the alloy ratio %; Weigh 1.2kg of Mg-Sr master alloy according to 0.2% mass content and 20% burning loss rate, wherein the Sr element accounts for 20% of the alloy; press 0.2% mass content and 0.15% The quality of iron consumption Content and 4% burning loss rate Weigh 7.3kg of Mg-Mn master alloy, wherein Mn element accounts for 5% of the alloy ratio;

[0065] (2) Preheating: Preheat the above materials in an oven to 310°C;

[0066] (3) Melting: Put the preheated metal Mg into a crucible preheated at 400°C, and raise the temperature inside the crucible to 730°C under th...

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Abstract

The invention discloses a high-strength magnesium alloy and a preparation method thereof. The high-strength magnesium alloy comprises the following components in percentage by weight: 6.0-7.5% of Al, 0.15-0.5% of Mn, 1.5-2.3% of Ca, 0.3-0.8% of Sr, 0.1-0.3% of Y, less than or equal to 0.1% of an impurity element of Be, less than or equal to 0.03% of Cu, less than or equal to 0.002% of Ni, less than or equal to 0.005% of Fe, less than or equal to 0.005% of Si and the balance of Mg. The high-strength magnesium alloy is excellent in yield; at the normal temperature, the tensile strength is 263 Mpa (which is higher than that of AZ91D by 5%); the yield strength is 196.5 Mpa (which is higher than that of AZ91D by 16%); the ductility is 7% (which is the same as that of AZ91D); the defects in mechanical properties of a conventional magnesium alloy (AZ91D) are overcome; and the high-strength magnesium alloy can be applied to product application of automobile supporting parts and 3C industry supporting parts.

Description

technical field [0001] The invention relates to the field of alloys, in particular to a high-strength magnesium alloy and a preparation method thereof. Background technique [0002] In the automobile industry, automobile energy saving, environmental protection, safety and comfort, and electronics are the rigid pursuit of the automobile market and the inevitable trend of technological development, and lightweight is its due meaning. Automobile lightweight design refers to the organic combination of lightweight materials, design technology and manufacturing technology under the premise of ensuring the use, safety and other performance of automobile products and cost control. No matter what kind of energy the car uses, lightweight is the best way to achieve high speed, safety, environmental protection and comfort. Research data shows that for every 10% reduction in car quality, energy consumption will drop by about 3% to 5%. It is beneficial to reduce exhaust emissions and pl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C23/02C22C1/03
CPCC22C1/03C22C23/02
Inventor 张亚琴刘德茂李远发劉海平高海亮黃春生黄维中宋卓能
Owner KA SHUI TECH HUIZHOU CO LTD
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