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Evolution of twins and sub-boundaries at the early stage of dynamic recrystallization in a Ni-30%Fe austenitic model alloy
Chen, Wenxiong1,2; Jia, Chunni1,2; Hu, Baojia1,2; Zheng, Chengwu1; Li, Dianzhong1
Corresponding AuthorZheng, Chengwu(cwzheng@imr.ac.cn)
2018-08-22
Source PublicationMATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
ISSN0921-5093
Volume733Pages:419-428
AbstractEvolution 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.
KeywordDynamic recrystallization Austenite Twins Nucleation Ni-30%Fe alloy
Funding OrganizationNational Natural Science Foundation of China
DOI10.1016/j.msea.2018.07.071
Indexed BySCI
Language英语
Funding ProjectNational Natural Science Foundation of China[51771192] ; National Natural Science Foundation of China[51401214]
WOS Research AreaScience & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering
WOS SubjectNanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS IDWOS:000442064800047
PublisherELSEVIER SCIENCE SA
Citation statistics
Cited Times:10[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/129052
Collection中国科学院金属研究所
Corresponding AuthorZheng, Chengwu
Affiliation1.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
Recommended Citation
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.
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