Thermal Stress Calculation and Fabrication of 6063 Al/60SiC‐35Al‐5Si Graded Materials by Spark Plasma Sintering

作     者：Zhang Dongming Zhang Lianmeng Gu Xiaofeng Chen Fei 

作者机构：State Key Lab of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan 430070 P.R. China 

出 版 物：《AIP Conference Proceedings》 

年 卷 期：2008年第973卷第1期

页      面：844-849页

学科分类：07[理学] 0702[理学-物理学] 

摘      要：The high intensity of thermal stress was generated during fabrication of 6063 aluminum/60SiC‐35Al‐5Si double‐layer material. In order to decrease the thermal stress, graded materials of Al/60SiC‐35Al‐5Si was fabricated by spark plasma sintering. The CTE in the graded layer was controlled by SiC fraction and particle sizes. The calculation results indicate that the net stress of more than 800 MPa was generated in the double‐layer materials, but it decreased to 170 MPa or less in the graded materials. So the stability can be guaranteed in the graded composites. The graded layers also have the potential for high thermal conductivity, more than 180W/Mk for every layer, which satisfies the application.