• CN:11-2187/TH
  • ISSN:0577-6686

›› 2013, Vol. 49 ›› Issue (18): 38-45.

• 论文 • 上一篇    下一篇

FGH95镍基粉末高温合金的研究和展望

国为民; 赵明汉; 董建新; 曾强;张龙飞;燕平   

  1. 钢铁研究总院高温材料研究所;北京科技大学材料科学与工程学院
  • 发布日期:2013-09-20

Research and Development in FGH95 P/M Nickel Based Superalloy

GUO Weimin; ZHAO Minghan; DONG Jianxin; ZENG Qiang;ZHANG Longfei;YAN Ping   

  1. High Temperature Material Research Institute, Central Iron and Steel Research Institute School of Material Science and Engineering, University of Science and Technology Beijing
  • Published:2013-09-20

摘要: 粉末高温合金由于自身特有的组织和性能特点成为先进航空发动机涡轮盘和涡轮挡环的优选材料。总结我国20世纪80年代初开始研制的第一代镍基粉末高温合金FGH95在制粉工艺、粉处理工艺、成形工艺和热处理工艺等方面的研究工作。着重介绍FGH95合金生产中所采用的等离子旋转电极制粉工艺(Plasma rotating electrode process, PREP),筛分和静电分离去除夹杂工艺,直接热等静压(Hot isostatic pressing, HIP)和热等静压+包套锻造(HIP+Forging)成形工艺,以及固熔+盐淬热处理工艺。展望氩气雾化制粉(Argon atomizatio, AA)和直接热等静压成形在FGH95合金低成本制造上的发展优势和高固溶缓冷热处理工艺对提高合金抗疲劳裂纹扩展能力的影响,提出下一步的研究方向。

关键词: FGH95镍基粉末高温合金, 制备工艺, 组织性能

Abstract: Powder metallurgy(P/M) superalloys are selected as turbine disks and turbine ring materials for advanced aero engine applications due to their specific microstructure and high temperature properties. The research on sieve processing, powder treatment processing, case forging processing and heat treatment processing of FGH95 first generation PM superalloy in China during the early stage of 1980s is reviewed. Various fabrication processes, including plasma rotating electrode process(PREP), sieving, static electricity separating, hot isostatic pressing(HIP) and case forging, solution and salt bath etc, are emphasized. It is also introduced the developing advantages of FGH95 alloy produced using argon atomization(AA) and HIP forging processing, which is low-cost and improvement in the crack propagation resistance due to high temperature solution and slow cooling processing. The future investigation is also discussed.

Key words: Fabrication processing, FGH95 P/M Ni-base superalloy, Microstructure and property

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