Evolution of twins and sub-boundaries at the early stage of dynamic recrystallization in a Ni-30%Fe austenitic model alloy

doi:10.1016/j.msea.2018.07.071

IMR OpenIR

	Evolution of twins and sub-boundaries at the early stage of dynamic recrystallization in a Ni-30%Fe austenitic model alloy
	Chen, Wenxiong 1,2; Jia, Chunni 1,2; Hu, Baojia 1,2; Zheng, Chengwu 1; Li, Dianzhong 1
通讯作者	Zheng, Chengwu(cwzheng@imr.ac.cn)
	2018-08-22
发表期刊	MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
ISSN	0921-5093
卷号	733 页码:419-428
摘要	Evolution of twins and sub-boundaries at the early stage of dynamic recrystallization (DRX) is investigated in a Ni-30%Fe austenitic alloy. It is found that the primary nucleation of DRX is accomplished by formation of annealing twins along the bulged pre-existing grain boundaries and at the triple junctions at the early stage of deformation. With the strain increasing, the DRX nucleation due to the formation and evolution of sub boundaries also plays a significant role. The results also indicate that the 9 twin boundaries are generated by mutual interactions between the encountered 3 twin boundaries at the initial stage. The pre-existing twin boundaries can gradually convert to general boundaries or twin steps owing to the interaction of twin boundaries with dislocations. Continuous DRX (CDRX) mechanism associated with the sub-boundaries evolution is found to be an assistant mechanism at the early stage of DRX. Besides, formation of sub-boundaries inside the growing DRX grains can stimulate a new round DRX nucleation by impeding migration of grain boundaries and making them serrated.
关键词	Dynamic recrystallization Austenite Twins Nucleation Ni-30%Fe alloy
资助者	National Natural Science Foundation of China
DOI	10.1016/j.msea.2018.07.071
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[51771192] ; National Natural Science Foundation of China[51401214]
WOS研究方向	Science & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000442064800047
出版者	ELSEVIER SCIENCE SA
引用统计	被引频次：34[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/321006/129052
专题	中国科学院金属研究所
通讯作者	Zheng, Chengwu
作者单位	1.Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Inst Met Res, Wenhua Rd 72, Shenyang 110016, Liaoning, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Wenhua Rd 72, Shenyang 110016, Liaoning, Peoples R China
推荐引用方式 GB/T 7714	Chen, Wenxiong,Jia, Chunni,Hu, Baojia,et al. Evolution of twins and sub-boundaries at the early stage of dynamic recrystallization in a Ni-30%Fe austenitic model alloy[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2018,733:419-428.
APA	Chen, Wenxiong,Jia, Chunni,Hu, Baojia,Zheng, Chengwu,&Li, Dianzhong.(2018).Evolution of twins and sub-boundaries at the early stage of dynamic recrystallization in a Ni-30%Fe austenitic model alloy.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,733,419-428.
MLA	Chen, Wenxiong,et al."Evolution of twins and sub-boundaries at the early stage of dynamic recrystallization in a Ni-30%Fe austenitic model alloy".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 733(2018):419-428.