摘要
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 Mg2Si precipitates and a little amount of MgO embedded inα-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 AZ91alloy.
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.
出处
《中国有色金属学会会刊：英文版》
CSCD
2006年第A03期1845-1847,共3页
Transactions of Nonferrous Metals Society of China
基金
Project(KGCX2-SW-216) supported by the Science Program of Chinese Academy of Sciences
project(05GG54) supported by the Science and Technology Program of Changchun Province, China
关键词
镁合金
金属复合物
微观结构
机械性能
Mg-based alloy
composite
Mg2Si
microstructure
mechanical property
