摘要
采用OM,XRD检测了不同熔体温度和冷却速度条件下A l-8.5Fe-1.3V-1.7S i(wt%)合金的微观组织结构,并检测了不同熔体温度下采用粉末冶金工艺制备的该合金室温力学性能。结果表明:熔体温度、冷却速率对该合金组织和性能有着明显的影响。在相同冷却条件下,熔体温度越高所得到合金的组织越细小,获得该合金最高力学性能则存在一个最佳的熔体温度;冷却速度对该合金的主要相组成起决定作用,并结合A l-Fe-V-S i合金的特性提出了该合金的熔炼工艺。
The microstructure of Al-Fe-V-Si alloy prepared at different melt temperature and cooling rate are examined by methods of OM and XRD, and the mechanical properties of samples prepared by method of powder metallurgy are examined. Results showed that, the melt temperature and cooling rate have apparent effect on the microstructure and mechanical properties of Al-8.5Fe-1.3V-1.7Si alloy. At the same cooling rate, the higher the melt temperature, the finer are the microstructure of samples. And there is a suitable melt temperature to yield the maximal mechanical properties of samples. The primary phases compositions of samples mostly depend on the cooling rate, and the melt technology is suggested according to properties of Al-Fe-V-Si alloy.
出处
《航空材料学报》
EI
CAS
CSCD
2006年第5期14-17,共4页
Journal of Aeronautical Materials
基金
国家重点基础研究发展规划资助项目(G1999064900)
中国博士后科学基金资助项目
关键词
耐热铝合金
微观组织
熔体温度
冷却速率
heat-resistant Aluminum alloy
microstructure
melt temperature
cooling rate
