Dynamic recrystallization behavior of GH4169G alloy during hot compressive deformation

doi:10.1016/j.jmst.2019.04.018

IMR OpenIR

	Dynamic recrystallization behavior of GH4169G alloy during hot compressive deformation
	Jia, Dan 1,2; Sun, Wenru 2; Xu, Dongsheng 2; Liu, Fang 2
通讯作者	Sun, Wenru(wrsun@imr.ac.cn)
	2019-09-01
发表期刊	JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
ISSN	1005-0302
卷号	35 期号:9 页码:1851-1859
摘要	The microstructure evolutions and nucleation mechanisms of GH4169G alloy were studied by optical microscope, electron backscatter diffraction (EBSD) and transmission electron microscope (TEM). The hot compression tests were performed different imposed reductions in the range of true strain from 0.12 to 1.2 at the temperatures of 930 degrees-1050 degrees with strain rates of 0.01 s(-1)-1 s(-1). It is found that cumulative and local misorientation increase firstly and then decrease when the strain is increased due to the progress of dynamic recrystallization (DRX). The low angle boundaries (LAGBs) rapidly develop to high angle boundaries (HAGBs) at relatively high deformation temperature or the low strain rate. There are three DRX mechanisms observed for GH4169 G alloy during hot deformation. Discontinuous dynamic recrystallization (DDRX) as the dominant mechanism for GH4169 G alloy is characterized by typical necklace structures and bulged-original boundaries. Besides, different deformation bands with dislocation cells formed in deformed matrix at low temperature and large strain, which indicates that continuous dynamic recrystallization (CDRX) contributed to the DRX process. The twin boundaries lost their coherent characteristics and provide sites for nucleation, which also accelerates the nucleation of DRX. (C) 2019 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology.
关键词	GH4169G alloy Dynamic recrystallization Nucleation mechanism
DOI	10.1016/j.jmst.2019.04.018
收录类别	SCI
语种	英语
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000475870600006
出版者	JOURNAL MATER SCI TECHNOL
引用统计	被引频次：76[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/321006/134715
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
推荐引用方式 GB/T 7714	Jia, Dan,Sun, Wenru,Xu, Dongsheng,et al. Dynamic recrystallization behavior of GH4169G alloy during hot compressive deformation[J]. JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,2019,35(9):1851-1859.
APA	Jia, Dan,Sun, Wenru,Xu, Dongsheng,&Liu, Fang.(2019).Dynamic recrystallization behavior of GH4169G alloy during hot compressive deformation.JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,35(9),1851-1859.
MLA	Jia, Dan,et al."Dynamic recrystallization behavior of GH4169G alloy during hot compressive deformation".JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY 35.9(2019):1851-1859.