Influences of different heat treatment methods on microstructure,compression properties and wear resistance of SiC<sub>p</sub>/AZ81 metal matrix composites

Yang Lin; Zhang Bo; Zou Peng; Zhong Ya; Yuan Xiaoguang

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Influences of different heat treatment methods on microstructure,compression properties and wear resistance of SiC_p/AZ81 metal matrix composites
Issue S1, Pages: 294-296(2008)
Published： 2008 ，
DOI：

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Yang Lin, Zhang Bo, Zou Peng, et al. Influences of different heat treatment methods on microstructure,compression properties and wear resistance of SiC_p/AZ81 metal matrix composites. [J]. Special Casting & Nonferrous Alloys (S1):294-296(2008)
DOI：

Yang Lin, Zhang Bo, Zou Peng, et al. Influences of different heat treatment methods on microstructure,compression properties and wear resistance of SiC_p/AZ81 metal matrix composites. [J]. Special Casting & Nonferrous Alloys (S1):294-296(2008) DOI：

摘要

研究了不同热处理工艺对SiCp/AZ81镁基复合材料组织、压缩性能及耐磨性的影响。结果表明

热处理能提高SiCp/AZ81镁基复合材料的耐磨性

其中固溶处理的效果最佳

与铸态的相比较

耐磨性可提高51.8%;时效处理及固溶+时效处理可提高SiCp/AZ81镁基复合材料压缩屈服强度

尤其是时效处理后达到238.7MPa;热处理过程改变β-Mg17Al12相的分布及形状是改善材料耐磨性和压缩屈服强度的主要原因。

Abstract

Influences of different heat treatment methods on the microstructure

compression properties and wear resistance of SiCp/AZ81 metal matrix composites were investigated. The experimental results showed that heat treatments can enhance the wear resistance of SiCp/AZ81 metal matrix composites

and solution treatment is the best method

compared with the cast SiCp/AZ81 metal matrix composites

and the wear resistance increase by 51.8%. Both aging treatment and solution + aging treatment can enhance compression properties of SiCp/AZ81 metal matrix composites

especially that compression strength reach 238.7 MPa after aging treatment. The main reason for the enhancement in the wear resistance and compression properties is that heat treatment will change the distribution and morphology of β-Mg17Al12 phase.