Citic Dicastal Co., Ltd

Hefei University of Technology

Zhendong Zhang

Lisheng Wang

Zhihua Zhu

Changhai Li

Chunhai Liu

Yongning Wang

Zuo Xu

Lixin Huang

Lateng A

Kedi Ding

Bangwei Bai

Haibo Qiao

Weimin Zhao

Zhifeng Wang

A high-strength and high-toughness magnesium alloy includes a Mg&#x2014;Al&#x2014;Bi&#x2014;Sb&#x2014;Zn&#x2014;Sr&#x2014;Y&#x2014;Mn alloy, prepared from the following components in percentage by mass: 7.0 to 10.0% of Al, 0.2 to 2.0% of Bi, 0.2 to 0.8% of Sb, 0.2 to 0.5% of Zn, 0.1 to 0.5% of Sr, 0.03 to 0.3% of Y, 0.05 to 0.1% of Mn and a balance of Mg.

High-strength and high-toughness magnesium alloy and preparation method thereof

The invention provides a method of refining aluminum alloy, which is characterized in that aluminum-based nanometer quasicrystal alloy is used as an aluminum alloy refiner to refine the aluminum alloy; the aluminum-based nanometer quasicrystal alloy does not comprise Si, Fe or Cr; the aluminum-based nanometer quasicrystal alloy consists of (1) Al; (2) Mn and (3) La and/or Ce. The refiner selected in the invention is rare earth-containing alloy which has a strong refinement ability on the aluminum alloy, and is nanometer quasicrystal; after adding the rare earth-containing alloy to melt, the element distribution of the rare earth-containing alloy is more uniform than that of traditional alloy; and nanometer quasicrystal particles substantially increase the number of heterogeneous nucleation particles and improve the grain refinement effect of the aluminum alloy.

Method of refining aluminum alloy

A process of preparing an aluminum alloy includes the following steps: first adding and completely melting a ZL101 Al-Si ingot and then covering the melt next adding one of modifiers Te and Sb and then performing heat preservation; finally adding one or more of rare earth elements La, Ce, Y and transition metal element Hf and then performing heat preservation. The ZL101 Al-Si alloy melt after the treatments can be casted into an ingot or a part after refining.

Process of preparing aluminum alloy

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Qinhuangdao, China

Zhendong Zhang