Structural characterization and property of in-situ synthesized AZ91-Mg2Si composite

A new-type Mg2Si composite was prepared with Mg-9Al-1Zn （AZ91） alloy and vermiculite as raw materials by melt infiltration method. The results show that the microstructure of composite consists of a large amount of MgESi precipitates and a little amount of MgO embedded in α-Mg matrix. The Vickers ha...

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Bibliographic Details
Published in:Transactions of Nonferrous Metals Society of China 2006-12, Vol.16 (A03), p.1845-1847
Main Author: 董龙祥 吴耀明 豆传国 许国根 王立民
Format: Article
Language:English
Subjects:
微观结构
机械性能
金属复合物
镁合金
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Summary:A new-type Mg2Si composite was prepared with Mg-9Al-1Zn （AZ91） alloy and vermiculite as raw materials by melt infiltration method. The results show that the microstructure of composite consists of a large amount of MgESi precipitates and a little amount of MgO embedded in α-Mg matrix. The Vickers hardness of the composite is obviously higher than that of matrix of AZ91 alloy. Moreover, the composite exhibits excellent compressive property. The ultimate compressive strength of the material is 290 MPa, the yield strength is 175 MPa, and the elongation is about 5%, which are higher than those of AZ91 alloy.
ISSN:1003-6326