Abnormal dynamic recrystallization behavior of a nickel based superalloy during hot deformation

doi:10.1016/j.jallcom.2019.02.055

IMR OpenIR

	Abnormal dynamic recrystallization behavior of a nickel based superalloy during hot deformation
	Jia, Dan 1,2; Sun, Wenru 2; Xu, Dongsheng 2; Yu, Lianxu 3; Xin, Xin 2; Zhang, Weihong 2; Qi, Feng 2
通讯作者	Sun, Wenru(wrsun@imr.ac.cn)
	2019-05-30
发表期刊	JOURNAL OF ALLOYS AND COMPOUNDS
ISSN	0925-8388
卷号	787 页码:196-205
摘要	The dependence of hot deformation behavior and microstructure evolution of IN718 alloy on strain rate were studied by isothermal compression experiments. The tests were performed under the strain rates range of 10(-2) s(-1) similar to 20 s(-1) up to true strain of 1.2 at 1000 degrees C. Two peak value of the flow stress curve is observed at intermediate strain rate of 1 s(-1), which is different from the single-peak dynamic recrystallization (DRX) behavior. The microstructure characterization reveals that fine and uniform DRX grains are easily obtained both at lower and higher strain rates, while the smaller DRX grain size and elongated original grains with lower fraction of DRX exhibits at strain rate of 1 s(-1). The lower accumulated stored energy is detected by Kernal Average Misorientation (KAM) map at the strain rate of 1 s(-1), which serves as strong obstacle to the migration of grain boundaries, thus restricts the nucleation and growth of DRX. In addition, the formation of twin boundaries (including Sigma 3, Sigma 9 and Sigma 27 boundaries) during the hot deformation depend on the DRX grains size and the driving force which is sensitive to the strain rate. (C) 2019 Elsevier B.V. All rights reserved.
关键词	IN718 alloy Strain rate Dynamic recrystallization Twinning
资助者	Special Key R&D Project of Common Critical Technology Innovation in Key Industries of Chongqing
DOI	10.1016/j.jallcom.2019.02.055
收录类别	SCI
语种	英语
资助项目	Special Key R&D Project of Common Critical Technology Innovation in Key Industries of Chongqing[cstc2017zdcy-zdyFX0101]
WOS研究方向	Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Chemistry, Physical ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000462592500024
出版者	ELSEVIER SCIENCE SA
引用统计	被引频次：59[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/132635
专题	中国科学院金属研究所
通讯作者	Sun, Wenru
作者单位	1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Liaoning, Peoples R China 3.Chongqing Skyrizon Aeroengines Co Ltd, Chongqing 401135, Peoples R China
推荐引用方式 GB/T 7714	Jia, Dan,Sun, Wenru,Xu, Dongsheng,et al. Abnormal dynamic recrystallization behavior of a nickel based superalloy during hot deformation[J]. JOURNAL OF ALLOYS AND COMPOUNDS,2019,787:196-205.
APA	Jia, Dan.,Sun, Wenru.,Xu, Dongsheng.,Yu, Lianxu.,Xin, Xin.,...&Qi, Feng.(2019).Abnormal dynamic recrystallization behavior of a nickel based superalloy during hot deformation.JOURNAL OF ALLOYS AND COMPOUNDS,787,196-205.
MLA	Jia, Dan,et al."Abnormal dynamic recrystallization behavior of a nickel based superalloy during hot deformation".JOURNAL OF ALLOYS AND COMPOUNDS 787(2019):196-205.