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Non-heat treatment strengthened high-strength high-toughness pressure casting aluminum-magnesium-silicon alloy and preparing method thereof

A magnesium-silicon alloy, high-strength and high-toughness technology, applied in the field of non-heat treatment strengthened high-strength and high-toughness die-casting aluminum-magnesium-silicon alloy and its preparation, can solve problems such as difficult to find materials, and achieve the effect of meeting application requirements and good die-casting performance

Active Publication Date: 2018-11-06
SHANGHAI JIAO TONG UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it is difficult to find suitable materials among the existing die-casting aluminum alloys.

Method used

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  • Non-heat treatment strengthened high-strength high-toughness pressure casting aluminum-magnesium-silicon alloy and preparing method thereof
  • Non-heat treatment strengthened high-strength high-toughness pressure casting aluminum-magnesium-silicon alloy and preparing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] The weight percent of each component of a non-heat-treated high-strength and tough die-casting aluminum-magnesium-silicon alloy in this embodiment is: Mg: 6.5wt.%; Si: 2.2wt.%; Mn: 0.7wt.%; Ti: 0.15wt.% ; V: 0.04wt.%%; Zr: 0.03wt.%; Be: 0.005wt.%; Ca: 0.005wt.%; The balance is Al.

[0030] The preparation of a non-heat-treated high-strength die-casting aluminum-magnesium-silicon alloy and its die-casting process in this embodiment include the following steps:

[0031] 1) Drying: Prepare raw materials such as pure aluminum, pure Mg, Al-20Si master alloy, Al-10Mn master alloy, Al-10Ti master alloy, Al-5V master alloy, Al-5Zr master alloy, Mg-20Ca master alloy Alloy, Al-10RE and Al-5Be master alloy are preheated to 200°C for drying treatment;

[0032]2) Melting: Use a crucible resistance furnace for melting, first preheat the resistance furnace to 200°C, and then evenly coat the inner wall of the crucible with paint; after drying, first melt the weighed pure aluminum, an...

Embodiment 2

[0053] The weight percent of each component of a non-heat treatment strengthened high-strength and tough die-casting aluminum-magnesium-silicon alloy in this embodiment is: Mg: 6.0wt.%; Si: 2.0wt.%; Mn: 0.6wt.%; Ti: 0.15wt.%. %; V: 0.03wt.%%; Zr: 0.02wt.%; Be: 0.004wt.%; Ca: 0.003wt.%; , the balance being Al.

[0054] The preparation and die-casting process of a non-heat-treated high-strength and toughness die-casting Al-Mg-silicon alloy in this example are the same as those in Example 1, and casting B5 is obtained.

Embodiment 3

[0056] The weight percent of each component of a non-heat treatment strengthened high-strength and tough die-casting aluminum-magnesium-silicon alloy in this embodiment is: Mg: 7.5wt.%; Si: 2.5wt.%; Mn: 0.7wt.%; Ti: 0.15wt.%. %; V: 0.04wt.%%; Zr: 0.03wt.%; Be: 0.005wt.%; Ca: 0.005wt.%; , the balance being Al.

[0057] The preparation and die-casting process of a non-heat-treated high-strength and tough die-casting aluminum-magnesium-silicon alloy in this example are the same as in Example 1, and casting B6 is obtained.

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Abstract

The invention relates to a non-heat-treatment strengthened high-strength high-toughness pressure casting aluminum-magnesium-silicon alloy, and a preparing method thereof. The pressure casting aluminum-magnesium-silicon alloy comprises, by weight percent, 6.0 to 8.0% of Mg, 2.0 to 3.6% of Si, 0.6 to 0.9% of Mn, 0.15 to 0.20% of Ti, 0.004 to 0.006% of Be, 0.003 to 0.01% of Ca, 0.03 to 0.1% of V, 0.02 to 0.1% of Zr, 0.01 to 0.2% of RE, smaller than or equal to 0.4% of the sum of the total amount of other impurities and the balance Al. the alloy has the high strength and high toughness under the casting-state condition, good pressure casting can be achieved, and the application needs of large thin-wall car body structural parts of the car industry can be greatly met.

Description

technical field [0001] The invention relates to the technical field of metal materials, in particular to a non-heat treatment strengthened high-strength and high-toughness die-casting aluminum-magnesium-silicon alloy and a preparation method thereof. Background technique [0002] In recent years, with the rapid development of industries such as automobiles and aerospace, the performance requirements for materials used in automobiles and aerospace have become more stringent. In addition, due to social pressures such as energy saving, emission reduction, and environmental pollution, lightweight has become a strategic development requirement. Therefore, the automobile, aerospace and other industries require higher strength when designing parts, and require high elongation and excellent impact toughness during deformation in order to achieve the goal of lightweight. Most die-casting aluminum alloys have medium strength and poor toughness (elongation <5%), such as traditional...

Claims

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Application Information

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IPC IPC(8): C22C21/08C22C1/03C22C1/06
CPCC22C1/026C22C1/03C22C1/06C22C21/08
Inventor 彭立明袁灵洋刘保良王渠东丁文江
Owner SHANGHAI JIAO TONG UNIV
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