过共晶Al-Si合金初生Si的热处理球化研究
Spheroidization of Primary Silicon in Hypereutectic Al-Si Alloy by Heat Treatment
卢才璇 1吴昊 1马恒 2王利民 1钱苗 2汤超 1何卫 1陈胜男1
作者信息
- 1. 南瑞集团有限公司(国网电力科学研究院有限公司),南京 211106;国网电力科学研究院武汉南瑞有限责任公司,武汉 430074
- 2. 浙江华电器材检测研究院有限公司,杭州 310015
- 折叠
摘要
以过共晶Al-24Si合金为研究对象,对经过变质处理的Al-24Si合金进行固态扩散加热、半固态加热处理,促使初生Si均匀、球化,确定了优化处理工艺,以提高合金性能.结果表明,固态扩散加热最佳参数为540℃保温12 h,初生Si逐渐长大并钝化;半固态加热最佳参数为615℃保温15 min,初生Si形态明显改善、球化,形状因子可达到0.80以上.
Abstract
The modified hypereutectic Al-24Si alloy was subjected to solid state diffusion heating and semi-solid heat-ing treatment to promote the homogenization and spheroidization of primary silicon,and the optimal process was deter-mined to improve the properties.The results indicate that the optimal heating parameter of solid state diffusion is 540℃for 12 h,and primary silicon is grown up and become passivated.The optimal parameter for semi-solid heating is 615℃for 15 min,and morphology of primary silicon is significantly improved and spheroidized,where the shape fac-tor can reach above 0.80.
关键词
过共晶铝硅合金/初生Si/固态扩散加热/半固态加热/球化Key words
Hypereutectic Al-Si Alloy/Primary Silicon/Solid State Diffusion Heating/Semi-solid Heating/Spheroidize引用本文复制引用
基金项目
国家电网公司科技指南资助项目(SGZJ0000KXJS2100125)
出版年
2024
NETL
NSTL
万方数据