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Investigation on creep mechanism of a Ni3Al-based single crystalsuperalloy IC6SX under 760°/540MPa

  • Liwu Jiang*
  • , Shusuo Li
  • , Meiling Wu
  • *此作品的通讯作者
  • University of Science and Technology Beijing
  • Beihang University

科研成果: 书/报告/会议事项章节会议稿件同行评审

摘要

The creep behaviors of a Ni3Al-base single crystal superalloy IC6SX prepared by spiralgrain selection method was studied systematically under the testing condition of 760°/540MPa.The microstructure evolution, movement of dislocations, formation of the dislocation networks anddislocation configuration during the creep process were investigated by scanning electronmicroscopy (SEM) and transmission electron microscopy (TEM). The results showed that the creepperformance of the single crystal alloy IC6SX is excellent under 760°C/540MPa. The experimentalresults showed that the creep curve of the Ni3Al-base single crystal superalloy IC6SX was dividedinto three stages, including decelerating creep stage, steady-state creep stage and accelerated creepstage. The microstructure and the dislocation configuration were different at different stage duringthe creep and the raft microstructure has not been formed. The creep mechanism was main slippingcharacterized by dislocation glide mechanism.

源语言英语
主期刊名High Performance Structure Materials
编辑Yafang Han, Junpin Lin, Chengbo Xiao, Xiaoqin Zeng
出版商Trans Tech Publications Ltd
804-809
页数6
ISBN(印刷版)9783037856086
DOI
出版状态已出版 - 2013
活动Chinese Materials Congress 2012, CMC 2012 - Taiyuan, 中国
期限: 13 7月 201218 7月 2012

出版系列

姓名Materials Science Forum
747-748
ISSN(印刷版)0255-5476
ISSN(电子版)1662-9752

会议

会议Chinese Materials Congress 2012, CMC 2012
国家/地区中国
Taiyuan
时期13/07/1218/07/12

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