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| 1 | 镍基单晶涡轮单晶材料的细观力学研究显示文摘本文针对CMSX-4单晶材料,在细观层次上对筏化-解筏以及空穴这两种主要损伤机理进行了细观试验研究。结果表明,空穴在蠕变、疲劳和热机械疲劳损伤中起着重大的作用;蠕变过程中的筏化规律影响材料的蠕变寿命,但细观层次的筏化,影响因素较为复杂。本文的研究结果对准确评定镍基单晶涡轮叶片的剩余寿命具有参考作用。 | 岳珠峰 杨治国 | 2005 | 燃气涡轮试验与研究2005，18，1： | 4 |
| 2 | A modern and robust methodology for modeling anisotropic creep characteristics of Ni-based DS and SC superalloys显示文摘According to more recent work,the Wilshire equations have shown good prediction accuracy in a wide range of materials and stress-temperature conditions,particularly in extrapolation of short term results to long term predictions.In the current paper,this methodology was further developed for modeling anisotropic creep characteristics(i.e.minimum creep strain εmin ,stress rupture life tf and time to a specified strain tε)of four typical Ni-based directionally solidified(DS)and single crystal(SC)superalloys,where a simple orientation factor related to the ultimate tensile strength(UTS)was introduced.The application of these simplistic approaches showed that the anisotropic creep characteristics in a wide range of stress-temperature conditions can be accurately simulated.Meanwhile,during the application of the modified Wilshire equations,break points occurring at the specified stress levels agree well with the transition of creep deformation mechanisms occurring in different stress regions,which provides confidence for using this method. | HUANG Jia SHI DuoQi YANG XiaoGuang | 2014 | Science China(Technological Sciences)2014，57，9： | 1 |
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