Fabrication and Properties of In-situ Al<sub>3</sub>Ti<sub>p</sub>/AZ91D Magnesium Matrix Composites by Melt Casting Process

Liu Shengtao; Cui Xianghong; Wang Shuqi; Yang-zirun

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Fabrication and Properties of In-situ Al₃Ti_p/AZ91D Magnesium Matrix Composites by Melt Casting Process
Vol. 31, Issue 3, Pages: 266-269(2011)
Published： 2011 ，
DOI：

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[1]刘胜涛,崔向红,王树奇,杨子润.熔铸法制备原位内生Al_3Ti_p/AZ91D复合材料[J].特种铸造及有色合金,2011,31(03):266-269+194.

Liu Shengtao, Cui Xianghong, Wang Shuqi, et al. Fabrication and Properties of In-situ Al₃Ti_p/AZ91D Magnesium Matrix Composites by Melt Casting Process. [J]. Special Casting & Nonferrous Alloys 31(3):266-269(2011)
[1]刘胜涛,崔向红,王树奇,杨子润.熔铸法制备原位内生Al_3Ti_p/AZ91D复合材料[J].特种铸造及有色合金,2011,31(03):266-269+194. DOI：

Liu Shengtao, Cui Xianghong, Wang Shuqi, et al. Fabrication and Properties of In-situ Al₃Ti_p/AZ91D Magnesium Matrix Composites by Melt Casting Process. [J]. Special Casting & Nonferrous Alloys 31(3):266-269(2011) DOI：

摘要

采用熔铸法制备了Al3Tip体积分数分别为4%和8%的AZ91D复合材料

研究了其显微组织和物相

测试了其致密度、硬度及磨损性能。结果表明

复合材料组织致密

原位内生的Al3Ti颗粒尺寸细小

呈球形且在基体中分布较均匀

与基体结合紧密;随Al3Ti体积分数的增加复合材料的致密度降低

硬度升高

但其耐磨性反而有所降低。与基体AZ91D合金相比

Al3Tip/AZ91D基复合材料的硬度和耐磨性均得到明显提高。

Abstract

Magnesium matrix composites reinforced with 4% and 8% （in volumetric fraction） Al3Ti particles were fabricated by melt casting process. Microstructure

phase constituent

relative density

hardness and wear resistance of the composites were investigated. The results reveal that dense structure in the composites can be observed

and in-situ fine and spherical Al3Ti phase is uniformly distributed into the matrix alloy with the compact bonding. With increasing in volumetric fraction of Al3Ti phase

relative density is decreased and hardness is increased in the composites

however

wear resistance of the composites is slightly deteriorated. In addition

hardness and wear resistance of the Al3Tip/AZ91D composites are superior to those of the AZ91D alloy.