张斌,王荣桥,胡殿印,蒋康河,毛建兴,荆甫雷.基于耦合损伤的镍基单晶高温合金同相热机械疲劳寿命预测[J].稀有金属材料与工程,2019,48(12):3889~3894.[Zhang Bin,Wang Rongqiao,Hu Dianyin,Jiang Kanghe,Mao Jianxing,Jing Fulei.Coupling damage based lifetime prediction of in-phase thermomechanical fatigue in nickel-based single crystal superalloys[J].Rare Metal Materials and Engineering,2019,48(12):3889~3894.]
基于耦合损伤的镍基单晶高温合金同相热机械疲劳寿命预测
投稿时间:2018-08-06  修订日期:2018-08-28
中文关键词:  耦合损伤  镍基单晶高温合金  同相热机械疲劳  寿命预测
基金项目:国家自然科学基金资助(项目号51675024、51305012、51375031)
中文摘要:
      在应力控制的同相热机械疲劳试验基础上,研究了DD6高温合金同相热机械疲劳损伤机理。基于连续介质损伤力学,建立了反映蠕变损伤和疲劳损伤耦合作用的寿命预测模型,并利用纯蠕变、疲劳的试验数据获取了模型中的损伤参数。进一步,本文开展了带保载时间的DD6高温合金同相热机械疲劳试验,试验寿命在基于耦合损伤的预测寿命的2.3倍分散带内,这表明本文发展的基于耦合损伤的寿命预测模型能够较为准确地预测DD6高温合金同相热机械疲劳寿命,可以为工程应用中DD6高温合金结构的寿命预测提供基础。
Coupling damage based lifetime prediction of in-phase thermomechanical fatigue in nickel-based single crystal superalloys
英文关键词:Coupling damage  nickel-based single crystal superalloy  in-phase thermomechanical fatigue  lifetime prediction
英文摘要:
      Based on the in-phase thermomechanical fatigue experiments under stress control, the damage mechanism of in-phase thermomechanical fatigue of DD6 superalloy is investigated. Based on the continuous damage mechanics, a lifetime prediction model reflecting the coupling of creep damage and fatigue damage is established, and the damage parameters in the model are obtained through using the experiment data of creep and fatigue. Furthermore, the experiments of in-phase thermomechanical fatigue with dwells of DD6 superalloy are conducted in this paper, and the experiment lifetimes are within a factor of 2.3 of the prediction lifetimes based on the coupling damage, which indicates that the coupling damage based lifetime prediction model developed in this paper could accurately predict the in-phase thermomechanical fatigue lifetimes of DD6 superalloy and provide a basis for the lifetime prediction of DD6 superalloy structure in engineering applications.
作者单位E-mail
张斌 北京航空航天大学 sdsgzhangbin2@qq.com 
王荣桥 北京航空航天大学  
胡殿印 北京航空航天大学 hdy@buaa.edu.cn 
蒋康河 中国航发湖南动力机械研究所  
毛建兴 北京航空航天大学  
荆甫雷 中国航空发动机研究院  
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