航空学报 > 1995, Vol. 16 Issue (5): 539-544

快速凝固Al-Fe-MRE高温铝合金的研究

沈英俊1, 季道馨2, 徐永利2, 陈昌麒2   

  1. 1. 北京航空材料研究所15室,北京,100095;2. 北京航空航天大学1系
  • 收稿日期:1993-11-25 修回日期:1994-07-06 出版日期:1995-10-25 发布日期:1995-10-25

THE DEVELOPMENT OF RAPID RESOLIDIFIED Al-Fe-MRE HIGH TEMPERATURE ALUMINUM ALLOY

Shen Yingjun Ji Daoxin1, Xu Yongli2, Chen Changqi2   

  1. 1. First Department, Beijing University of Aeronautics and Astronautics,Beijing,100083;2. Beijing Institute of Aero nautical Material, Faculty 15, Beijing , 100095
  • Received:1993-11-25 Revised:1994-07-06 Online:1995-10-25 Published:1995-10-25

摘要: 研究快速凝固铝铁混合稀土高温铝合金的粉末制备及性能、粉末合金热成形、粉末合金的组织及性能的关系等。用氩气及氦气超音速雾化制得粉末获得的冷却速度为 5× 1 0 3~ 7× 1 0 6 K/s。用金相及扫描电镜观察粉末颗粒的形貌呈球形 ,粉末尺寸越小 ,组织越细。通过对挤压成形的Al-Fe-MRE粉末合金的室温、高温及热暴露试验 ,得到其力学性能及影响性能的因素

关键词: 固化, 耐热合金, 铝合金, 稀土元素

Abstract: Experiments were conducted to explore the high temperature resistant aluminium alloy Al Fe MRE.The problems studied include powder preparation and properties, heat forming of the powder alloy, relationship between its microstructure and properties, etc. Ar and He gas atomization processes were used to prepare the powder. It was found that the morphology is spherical and the smaller the particle size, the finer the microstructure. The cooling rate of powder particles increases with the decrease in particle size, and the He atomized gas provides a cooling rate 4~8 times as high as the Ar one. The resultant Al 8Fe MRE is of high mechanical properties both at room temperature and at elevated temperatures.

Key words: solidfication, heat resistant alloys, aluminium alloys, rare earth elements

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