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材料工程  2012, Vol. 0 Issue (4): 1-5    
  本期目录 | 过刊浏览 | 高级检索 |
近[001]取向DD6单晶高温合金980℃/250MPa持久性能各向异性研究
喻健, 李嘉荣, 韩梅, 史振学, 刘世忠
北京航空材料研究院 先进高温结构材料重点实验室, 北京 100095
Anisotropy of Stress Rupture Properties of DD6 Single Crystal Superalloy at 980℃/250MPa Near [001] Orientation
YU Jian, LI Jia-rong, HAN Mei, SHI Zhen-xue, LIU Shi-zhong
Science and Technology on Advanced High Temperature Structural Materials Laboratory,Beijing Institute of Aeronautical Materials,Beijing 100095,China
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摘要 通过不同取向DD6单晶高温合金980℃/250MPa持久测试,研究了取向对980℃持久性能的影响。结果表明:[001]取向偏离主应力轴15?以内,DD6单晶高温合金980℃/250MPa持久寿命相当,没有各向异性。这主要是由于近[001]取向DD6单晶高温合金多个〈110〉{111}滑移系共同作用的结果。同时,原子扩散造成的γ′筏排和γ/γ′相界面形成的位错网也降低持久性能各向异性。
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关键词 DD6单晶高温合金持久性能各项异性    
Abstract:The DD6 single crystal superalloy with various orientations was tested at 980℃/250MPa. The influence of orientation on the stress rupture properties at 980℃ was investigated. The results showed that DD6 single crystal superalloy with orientation deviated from [001] direction within 15? exhibited almost the same stress rupture lives at 980℃/250MPa, and there was no anisotropic behavior. The reason of no anisotropic stress rupture properties at 980℃/250MPa was multiple 〈110〉{111} slip systems operated. The γ′ raft caused by the atom diffusion and the dislocation networks formed on γ/γ′ also reduced the anisotropy of stress rupture properties.
Key wordsDD6    single crystal superalloy    stress rupture property    anisotropy
收稿日期: 2011-08-28      出版日期: 2012-04-20
作者简介: 喻健(1985—),男,博士研究生,从事单晶高温合金方面的研究工作,联系地址:北京市81信箱1分箱(100095),E-mail: yujianacademia@163.com
引用本文:   
喻健, 李嘉荣, 韩梅, 史振学, 刘世忠. 近[001]取向DD6单晶高温合金980℃/250MPa持久性能各向异性研究[J]. 材料工程, 2012, 0(4): 1-5.
YU Jian, LI Jia-rong, HAN Mei, SHI Zhen-xue, LIU Shi-zhong. Anisotropy of Stress Rupture Properties of DD6 Single Crystal Superalloy at 980℃/250MPa Near [001] Orientation. Journal of Materials Engineering, 2012, 0(4): 1-5.
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