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热处理对粉末冶金TiAl双态组织与性能的影响

苏美科 郑立静 张虎 郎泽保

苏美科, 郑立静, 张虎, 等 . 热处理对粉末冶金TiAl双态组织与性能的影响[J]. 北京航空航天大学学报, 2013, 39(4): 549-552,558.
引用本文: 苏美科, 郑立静, 张虎, 等 . 热处理对粉末冶金TiAl双态组织与性能的影响[J]. 北京航空航天大学学报, 2013, 39(4): 549-552,558.
Su Meike, Zheng Lijing, Zhang Hu, et al. Effect of heat treatment on duplex microstructure and mechanical properties of PM TiAl alloy[J]. Journal of Beijing University of Aeronautics and Astronautics, 2013, 39(4): 549-552,558. (in Chinese)
Citation: Su Meike, Zheng Lijing, Zhang Hu, et al. Effect of heat treatment on duplex microstructure and mechanical properties of PM TiAl alloy[J]. Journal of Beijing University of Aeronautics and Astronautics, 2013, 39(4): 549-552,558. (in Chinese)

热处理对粉末冶金TiAl双态组织与性能的影响

详细信息
  • 中图分类号: TG 146.2

Effect of heat treatment on duplex microstructure and mechanical properties of PM TiAl alloy

  • 摘要: 对粉末冶金制备的Ti-46Al-2Cr-2Nb-(B,W)(at%)合金在1 280 ℃进行直接热处理,通过3种不同冷却速度获得了不同的双态组织.当冷却速度为50℃/min时,组织中的α晶粒通过析出γ片形成片层团,获得主要由片层团和γ相组成的双态组织,组织中过高片层体积分数导致拉伸延长率不高;而冷却速度为10℃/min 和5℃/min时,形成了主要由α2晶粒和γ相组成的双相组织,α2晶粒的存在进一步降低了材料室温延长率.

     

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出版历程
  • 收稿日期:  2012-04-28
  • 网络出版日期:  2013-04-30

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