摘要
对体积分数为5%的SiC颗粒增强的A356复合材料和A356合金分别进行吸铸试验,测量熔体充型与凝固过程中铸件和铸型的温度,讨论了SiCp/A356复合材料与A356合金的铸件和铸型的温度变化规律。结果表明,SiCp的加入使SiCp/A356复合材料凝固前温度下降速度增大,凝固后的温度下降速度减小;同时由于潜热不同,SiCp/A356复合材料结晶温度低于A356合金。
Suction casting SiCp/A356 metal matrix composites（MMCs）with 5% reinforced particles and A356 alloy were carried out,respectively.Temperature of castings and mould during filling and solidification process was measured to discuss the temperature variation of SiCp/A356 composites and A356 alloy castings and their moulds.The results show that SiCp addition can increase the temperature-decrement rate of SiCp/A356 composites before solidification and decrease the temperature-decrement rate after solidification.In addition,due to the difference of latent heat between the composites and the matrix alloy,the solidification transformation temperature of SiCp/A356 composites is lower than that of A356 alloy.
出处
《特种铸造及有色合金》
CAS
CSCD
北大核心
2011年第8期753-756,共4页
Special Casting & Nonferrous Alloys
基金
国家自然科学基金资助项目(50975093)
中央高校基本科研业务专项资助项目(2009ZM0283)
关键词
SiC_p/A356
温度
吸铸
凝固
SiCp/A356 Composites
Temperature
Suction Castings
Solidification
