(1哈尔滨工业大学材料科学与工程学院，哈尔滨 150001
2 中国科学院金属研究所快速凝固非平衡合金国家重点实验室，沈阳 110015)
摘 要: 以Al-Cu-Fe和Al-Fe-V-Si两个合金系为基础，对合金成分进行了优化设计，组成了 Al-Fe-Cu-V-Si-Ni-Ce-Zr合金。对超音速气体雾化快速凝固的上述合金粉末进行的研究表明，新的合金中同时形成原来两个合金系中的析出相；在61 μm的粉末中，没有发现第三种析出相。热分析试验和400 ℃热处理试样的X射线衍射结果，证明该合金中的析出相在400℃以下具有相当好的稳定性。
关键字: 快速凝固 耐热铝合金 弥散相 热稳定性
（1 School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, P. R. China
2 State Key Laboratory for Rapidly Solidified Non-equilibrium Alloys,
Institute of Metal Research, Chinese Academy of Science, Shenyang 110015, P. R. China）
Abstract:Based on Al-Cu-Fe and Al-Fe-V-Si alloys, the Al-Fe-Cu-V-Si-Ni-Ce-Zr alloy has been prepared by the optimization design of chemical compositions. The investigation on rapidly solidified powders produced by ultrasonic gas atomization showed that the two kinds of dispersoids presented in Al-Cu-Fe and Al-Fe-V-Si alloys have simultaneously reformed in the new alloy, there is not any other dispersoid in the powders below 61μm. The results of differential thermal analysis and X-ray diffraction of heat treated powders at 400℃ proved that the dispersoids in the alloy possess proper thermal stability and it is possible to be a newly high strength and high temperature aluminum alloy.
Key words: rapid solidification; high temperature aluminum alloys; dispersoid; thermal stability
