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Superior mechanical properties and deformation mechanisms of heterogeneous laminates under dynamic shear loading
He JY(何金燕); Yuan FP(袁福平); Yang MX(杨沐鑫); Jiao SH(焦四海); Wu XL(武晓雷)
Corresponding AuthorYuan, Fuping(fpyuan@lnm.imech.ac.cn)
Source PublicationMATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
2019-05-22
Volume756Pages:492-501
ISSN0921-5093
AbstractHigh-strain rate response of low C steel/304 stainless steel (SS) laminates was characterized by hat-shaped specimen using Hopkinson-bar technique at a strain rate of about 7 x 10(4) s(-1). Better dynamic shear properties were observed in the laminates, compared to the plain low C steel plate and the plain 304 SS plate. The laminates were found to postpone the nucleation of adiabatic shear band (ASB) in the hard zone and to delay the propagation of ASB from the hard zone to the soft zone. The conventional maximum stress criterion on ASB nucleation was found not valid any more in the laminates. The hardness difference between the hard zone and the soft zone in the laminates was found to have great influence on the patterns of ASB evolution. Nanotwins were formed in the 304 SS and grain refinement was observed in the martensite low C steel for strain hardening under dynamic shear loading. The mechanical incompatibility across the interfaces was observed to result in strain gradient and geometrically necessary dislocations at the interfaces under dynamic shear loading, contributing to extra strain hardening. The extra hardening was also found to be triggered at the propagation tip of ASB, which helps for achieving better dynamic ductility in the laminates.
KeywordLaminates Twinning Strain gradient Geometrically necessary dislocations Dynamic fracture Shear band
DOI10.1016/j.msea.2019.04.082
Indexed BySCI ; EI
Language英语
WOS IDWOS:000469893400057
WOS KeywordSTRAIN-GRADIENT PLASTICITY ; HIGH-TENSILE DUCTILITY ; HIGH-STRENGTH ; ULTRAHIGH STRENGTH ; TI-6AL-4V ; BEHAVIOR ; TITANIUM ; ALLOY ; BANDS ; STEEL
WOS Research AreaScience & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering
WOS SubjectNanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
Funding ProjectNational Key R&D Program of China[2017YFA0204402] ; National Natural Science Foundation of China[11672313] ; National Natural Science Foundation of China[11572328] ; National Natural Science Foundation of China[51601204] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDB22040503]
Funding OrganizationNational Key R&D Program of China ; National Natural Science Foundation of China ; Strategic Priority Research Program of the Chinese Academy of Sciences
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Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/79338
Collection非线性力学国家重点实验室
Recommended Citation
GB/T 7714
He JY,Yuan FP,Yang MX,et al. Superior mechanical properties and deformation mechanisms of heterogeneous laminates under dynamic shear loading[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2019,756:492-501.
APA 何金燕,袁福平,杨沐鑫,焦四海,&武晓雷.(2019).Superior mechanical properties and deformation mechanisms of heterogeneous laminates under dynamic shear loading.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,756,492-501.
MLA 何金燕,et al."Superior mechanical properties and deformation mechanisms of heterogeneous laminates under dynamic shear loading".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 756(2019):492-501.
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