Transactions of Materials and Heat Treatment

Title：Effects of SiC particles on thixotropic compression behavior of SiCp/AZ61 composites

Authors： ZHANG Fa-yun1 YAN Hong2(1.Department of Solar Energy Science and Engineering Xinyu College Xinyu 338000 China 2.Institute of Advanced Forming and Manufacturing and Die and Mold Nanchang University Nanchang 330029 China)

Unit：

KeyWords： SiC particle thixotropic compression SiCp/AZ61 composite mechanical behavior

ClassificationCode：TB33

year,vol(issue):pagenumber：2010,35(1):133-137

Abstract：

Thixotropic compression tests on semi-solid billets of SiCp/AZ61 composites fabricated with the method of stirring-melt casting and isothermal heat treatment were carried out by the Thermecmastor-Z dynamic material testing machine.Effects of SiC particles volume fraction on the true stress and microstructure were emphatically analyzed.The results show that SiC particles mainly located between grain boundary before and after compression tests of SiCp/AZ61 composite.In the meantime,the higher true stress and the finer microstructure as well as the clearer plastic deformation are found with the increase of SiC particles reinforcement volume fraction in semi-solid state.

Funds：

国家自然科学基金资助项目(50465003,50765005);; 08年江西省新余市自然科学基金资助项目(2008zrkxkxjj02);; 08年校级重点课题资助项目(XJ0805)

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