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

  • Liwu Jiang*
  • , Shusuo Li
  • , Meiling Wu
  • *Corresponding author for this work
  • University of Science and Technology Beijing
  • Beihang University

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

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.

Original languageEnglish
Title of host publicationHigh Performance Structure Materials
EditorsYafang Han, Junpin Lin, Chengbo Xiao, Xiaoqin Zeng
PublisherTrans Tech Publications Ltd
Pages804-809
Number of pages6
ISBN (Print)9783037856086
DOIs
StatePublished - 2013
EventChinese Materials Congress 2012, CMC 2012 - Taiyuan, China
Duration: 13 Jul 201218 Jul 2012

Publication series

NameMaterials Science Forum
Volume747-748
ISSN (Print)0255-5476
ISSN (Electronic)1662-9752

Conference

ConferenceChinese Materials Congress 2012, CMC 2012
Country/TerritoryChina
CityTaiyuan
Period13/07/1218/07/12

Keywords

  • Creep mechanism
  • Dislocation configuration
  • IC6SX
  • Single crystal superalloy

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