Effects of Processing Technologies on Mechanical Properties of SiC Particulate Reinforced Magnesium Matrix Composites
来源期刊：Journal Of Wuhan University Of Technology Materials Science Edition2014年第4期
论文作者：樊建锋 ZHANG Hua DONG Hongbiao XU Bingshe ZHANG Zhifeng SHI Likai
文章页码：769 - 772
摘 要：Mg matrix composites with SiC particles ranging from 5vol%-25vol% were prepared using stirring casting method. Die casting, squeezing casting, and extrusion were applied for inhibiting or eliminating the defects such as gas porosity and shrinkage void. Through die casting and squeezing casting, most of the defects in Mg matrix composites could be eliminated, but the mechanical properties were improved limitedly. On the other hand, after hot extrusion, not only most of the defects of as-cast composites ingots were eliminated, but also the mechanical properties were improved markedly. With the addition of SiC, the tensile strength, yield strength and elastic modulus of as extrusion SiCp/AZ61 composites increased remarkably, and the elongation decreased obviously.
樊建锋1,2,3，ZHANG Hua1,2,3，DONG Hongbiao1,2,3，XU Bingshe1,2,3，ZHANG Zhifeng4，SHI Likai4
1. Key Laboratory of Interface Science and Engineering in Advanced Materials, Taiyuan University of Technology, Ministry of Education,Taiyuan University of Technology2. Shanxi Research Center of Advanced Materials Science and Technology3. College of Materials Science and Engineering, Taiyuan University of Technology4. Beijing General Research Institute for Non-ferrous Metals
摘 要：Mg matrix composites with SiC particles ranging from 5vol%-25vol% were prepared using stirring casting method. Die casting, squeezing casting, and extrusion were applied for inhibiting or eliminating the defects such as gas porosity and shrinkage void. Through die casting and squeezing casting, most of the defects in Mg matrix composites could be eliminated, but the mechanical properties were improved limitedly. On the other hand, after hot extrusion, not only most of the defects of as-cast composites ingots were eliminated, but also the mechanical properties were improved markedly. With the addition of SiC, the tensile strength, yield strength and elastic modulus of as extrusion SiCp/AZ61 composites increased remarkably, and the elongation decreased obviously.
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