IMECH-IR  > 非线性力学国家重点实验室
Enhanced quasi-static and dynamic shear properties by heterogeneous gradient and lamella structures in 301 stainless steels
Xing, JX; Yuan FP(袁福平); Wu XL(武晓雷); Yuan, FP (reprint author), Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, 15,North 4th Ring,West Rd, Beijing 100190, Peoples R China.
Source PublicationMATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
2017
Volume680Pages:305-316
ISSN0921-5093
AbstractIn the present study, quasi-static and dynamic shear response of 301 stainless steel (SS) with gradient structure (GS) and heterogeneous lamella structure (HLS) were investigated by uniaxial tensile tests and Hopkinson-bar tests with hat-shaped specimens. The 301 SS with GS and HLS show a good combination of strength and ductility under quasi-static tensile tests, which is due to the back stress hardening for heterogeneous structures. Before the formation of adiabatic shear band (ASB), the dynamic shear response of 301 SS with coarse-grained (CG) austenitic structure shows a strong linear hardening stage and a plateau stage, which are due to the martensite transformation and the continuous deformation through strain partitioning between different phases, respectively. For 301 SS with CG austenitic structure, the grain size was observed to significantly refined in the ASB, while the reverse phase transformation occurs and the austenite phase increases significantly again in the ASB with increasing shear displacement, resulting in a hardness valley in the ASB at the shear displacement of 2.0 mm. The GS and HLS show excellent dynamic shear properties, this could be due to the back stress hardening for either macroscopically or microscopically heterogeneous structures. The HIS seems to have better impact shear properties than the GS, which indicates that the HIS with microscopically heterogeneous structures could delay the formation of ASB in a better way than the GS with macroscopically heterogeneous structures. The results in the current study could provide insights for obtaining better mechanical properties under dynamic conditions.
KeywordHopkinson-bar Dynamic Shear Response Adiabatic Shear Band Gradient Structure Heterogeneous Lamella Structure
DOI10.1016/j.msea.2016.10.111
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Indexed BySCI ; EI
Language英语
WOS IDWOS:000390495600036
WOS KeywordHopkinson-bar ; Dynamic shear response ; Adiabatic shear band ; Gradient structure ; Heterogeneous lamella structure
WOS Research AreaScience & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering
WOS SubjectNanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
Funding OrganizationNational Natural Science Foundation of China [11472286, 11572328, 11672313] ; Strategic Priority Research Program of the Chinese Academy of Sciences [XDB22040503] ; National Key Basic Research Program of China [2012CB932203, 2012CB937500]
DepartmentLNM材料介观力学性能的表征
Classification一类
Ranking1
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Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/59973
Collection非线性力学国家重点实验室
Corresponding AuthorYuan, FP (reprint author), Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, 15,North 4th Ring,West Rd, Beijing 100190, Peoples R China.
Recommended Citation
GB/T 7714
Xing, JX,Yuan FP,Wu XL,et al. Enhanced quasi-static and dynamic shear properties by heterogeneous gradient and lamella structures in 301 stainless steels[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2017,680:305-316.
APA Xing, JX,袁福平,武晓雷,&Yuan, FP .(2017).Enhanced quasi-static and dynamic shear properties by heterogeneous gradient and lamella structures in 301 stainless steels.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,680,305-316.
MLA Xing, JX,et al."Enhanced quasi-static and dynamic shear properties by heterogeneous gradient and lamella structures in 301 stainless steels".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 680(2017):305-316.
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