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Fracture behavior of an austenitic stainless steel with nanoscale deformation twins
Xiong, L.; You, Z. S.; Lu, L.; Lu, L (reprint author), Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, 72 Wenhua Rd, Shenyang 110016, Peoples R China.
2017-01-15
Source PublicationSCRIPTA MATERIALIA
ISSN1359-6462
Volume127Pages:173-177
AbstractA bulk nanotwinned austenitic stainless steel containing a large volume fraction of deformation twins was produced by dynamic plastic deformation. The tensile tests and J-integral fracture toughness measurements indicate that this steel exhibits a combination of high strength (sigma(ys) = 920 MPa) and considerable fracture toughness (K-JC > 126 MPa m(1/2)). The fracture is associated with localized shear band induced destruction of the nanotwinned structure and with micro-void development at the generated nanoscale large angle grain boundaries within the shear bands, which consumes large plastic energy and contributes the fracture resistance. (C) 2016 Acta Materialia Inc Published by Elsevier Ltd. All rights reserved.; A bulk nanotwinned austenitic stainless steel containing a large volume fraction of deformation twins was produced by dynamic plastic deformation. The tensile tests and J-integral fracture toughness measurements indicate that this steel exhibits a combination of high strength (sigma(ys) = 920 MPa) and considerable fracture toughness (K-JC > 126 MPa m(1/2)). The fracture is associated with localized shear band induced destruction of the nanotwinned structure and with micro-void development at the generated nanoscale large angle grain boundaries within the shear bands, which consumes large plastic energy and contributes the fracture resistance. (C) 2016 Acta Materialia Inc Published by Elsevier Ltd. All rights reserved.
description.department[xiong, l. ; you, z. s. ; lu, l.] chinese acad sci, inst met res, shenyang natl lab mat sci, 72 wenhua rd, shenyang 110016, peoples r china ; [you, z. s.] nanjing univ sci & technol, herbert gleiter inst nanosci, 200 xiaolingwei st, nanjing 210094, jiangsu, peoples r china
KeywordNanotwinned Stainless Steel Fracture Toughness Shear Deformation Void Nucleation
Subject AreaNanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
Funding OrganizationNational Basic Research Program of China (973 Program) [2012CB932202]; National Science Foundation of China [51420105001, 51171181, 51371171, 51471172, 51401211]
Indexed BySCI
Language英语
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/78341
Collection中国科学院金属研究所
Corresponding AuthorLu, L (reprint author), Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, 72 Wenhua Rd, Shenyang 110016, Peoples R China.
Recommended Citation
GB/T 7714
Xiong, L.,You, Z. S.,Lu, L.,et al. Fracture behavior of an austenitic stainless steel with nanoscale deformation twins[J]. SCRIPTA MATERIALIA,2017,127:173-177.
APA Xiong, L.,You, Z. S.,Lu, L.,&Lu, L .(2017).Fracture behavior of an austenitic stainless steel with nanoscale deformation twins.SCRIPTA MATERIALIA,127,173-177.
MLA Xiong, L.,et al."Fracture behavior of an austenitic stainless steel with nanoscale deformation twins".SCRIPTA MATERIALIA 127(2017):173-177.
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