Advanced   Register
IMR OpenIR  > 中国科学院金属研究所  > 期刊论文

题名: Effects of crystal orientations on the cyclic deformation behavior in the low cycle fatigue of a single crystal nickel-base superalloy
作者: Liu, Liu;  Meng, Jie;  Liu, Jinlai;  Jin, Tao;  Sun, Xudong;  Zhang, Haifeng
发表日期: 2017-10-5
摘要: Cyclic stress responses during low cycle fatigue of a Re-bearing Ni-base single crystal superalloy with [001], [011] and [111] orientations have been investigated at 980 degrees C, and attention is paid to the corresponding deformation microstructure to establish a clear microstructure-mechanical relationship. It is found that deformation of the [001] specimens with increased strain amplitude is characterized by cyclic softening at the early stage, while the [011] and [111] specimens exhibit cyclic softening under large strain amplitude and cyclic hardening under small cyclic amplitude. The softening response is related chiefly to the formation of dislocation networks, gamma' degradation and the dislocation recovery process. Moreover, plenty of parallel aligned dislocations in the [011] specimens reduce the probability of dislocation interactions among different slip systems, resulting in cyclic hardening. With respect to the [111] specimens, since a considerable number of dislocations pile up in gamma channels, the resistance of the dislocation movement increases and cyclic hardening is resulted. Our results throw light upon microscopic deformation mechanism responsible for the cyclic stress response behaviors of the alloy with various orientations. (C) 2017 Published by Elsevier Ltd.
刊名: ELSEVIER SCI LTD
Appears in Collections:中国科学院金属研究所_期刊论文

Files in This Item:

There are no files associated with this item.




Recommended Citation:
Liu, Liu,Meng, Jie,Liu, Jinlai,et al. Effects Of Crystal Orientations On The Cyclic Deformation Behavior In The Low Cycle Fatigue Of A Single Crystal Nickel-base Superalloy[J]. Elsevier Sci Ltd,2017,131:441-449.

SCI Citaion Data:
Service
 Recommend this item
 Sava as my favorate item
 Show this item's statistics
 Export Endnote File
Google Scholar
 Similar articles in Google Scholar
 [Liu, Liu]'s Articles
 [Meng, Jie]'s Articles
 [Liu, Jinlai]'s Articles
CSDL cross search
 Similar articles in CSDL Cross Search
 [Liu, Liu]‘s Articles
 [Meng, Jie]‘s Articles
 [Liu, Jinlai]‘s Articles
Scirus search
 Similar articles in Scirus
Related Copyright Policies
Null
Social Bookmarking
  Add to CiteULike  Add to Connotea  Add to Del.icio.us  Add to Digg  Add to Reddit 
所有评论 (0)
暂无评论
 
评注功能仅针对注册用户开放,请您登录
您对该条目有什么异议,请填写以下表单,管理员会尽快联系您。
内 容:
Email:  *
单位:
验证码:   刷新
您在IR的使用过程中有什么好的想法或者建议可以反馈给我们。
标 题:
 *
内 容:
Email:  *
验证码:   刷新

Items in IR are protected by copyright, with all rights reserved, unless otherwise indicated.

 

 

Valid XHTML 1.0!
Copyright © 2007-2018  中国科学院金属研究所  -Feedback
Powered by CSpace