Phase transition of Al-Fe-V-Si heat-resistant alloy by spray deposition  

作　　者：谭敦强 黎文献 肖于德 王日初 马正青 熊柏清 朱宝宏 张永安 

机构地区：[1]School of Materials Science and Engineering [2]General Research Institute for Nonferrous Metals

出　　处：《中国有色金属学会会刊：英文版》2003年第3期568-573,共6页Transactions of Nonferrous Metals Society of China

基　　金：Project(G19990 64 90 0 )supportedbytheNationalKeyFundamentalResearchandDevelopmentProgramofChina

摘　　要：Solidification curve of Al 8.5Fe 1.7Si was calculated by thermodynamic models. Phase constitutions of Al 8.5Fe, Al 8.5Fe 1.7Si and Al 8.5Fe 1.7Si 1.3V alloys were analysed at different cooling rates by means of optical microscopy, X ray diffraction, transmission electron microscopy and so on. Microstructures of spraying deposited ingots and their hot processed samples were detected, and the phase transitions during spraying deposition, heating process and hot processing were also studied. The results show that, by spraying deposition, the ideal structures of α (Al) and Al 12 (Fe, V) 3Si can be obtained when cooling rate is above 10 5 K/s; and restraining the formation of Al 8(Fe,V) 2Si/Al 13 Fe 4 can improve the properties of the alloy.Solidification curve of Al 8.5Fe 1.7Si was calculated by thermodynamic models. Phase constitutions of Al 8.5Fe, Al 8.5Fe 1.7Si and Al 8.5Fe 1.7Si 1.3V alloys were analysed at different cooling rates by means of optical microscopy, X ray diffraction, transmission electron microscopy and so on. Microstructures of spraying deposited ingots and their hot processed samples were detected, and the phase transitions during spraying deposition, heating process and hot processing were also studied. The results show that, by spraying deposition, the ideal structures of α (Al) and Al 12 (Fe, V) 3Si can be obtained when cooling rate is above 10 5 K/s; and restraining the formation of Al 8(Fe,V) 2Si/Al 13 Fe 4 can improve the properties of the alloy.

关 键 词：耐热合金 相变 AL-FE-V-SI合金 铝合金 喷射沉积 相组成 

分 类 号：TG132.3[一般工业技术—材料科学与工程]