Superior mechanical properties and deformation mechanisms of heterogeneous laminates under dynamic shear loading

doi:10.1016/j.msea.2019.04.082

CORC > 力学研究所 > 中国科学院力学研究所 > 非线性力学国家重点实验室

	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)
刊名	MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
	2019-05-22
卷号	756 页码:492-501
关键词	Laminates Twinning Strain gradient Geometrically necessary dislocations Dynamic fracture Shear band
ISSN号	0921-5093
DOI	10.1016/j.msea.2019.04.082
通讯作者	Yuan, Fuping(fpyuan@lnm.imech.ac.cn)
英文摘要	High-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.
分类号	一类
资助项目	National 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]
WOS关键词	STRAIN-GRADIENT PLASTICITY ; HIGH-TENSILE DUCTILITY ; HIGH-STRENGTH ; ULTRAHIGH STRENGTH ; TI-6AL-4V ; BEHAVIOR ; TITANIUM ; ALLOY ; BANDS ; STEEL
WOS研究方向	Science & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering
语种	英语
WOS记录号	WOS:000469893400057
资助机构	National Key R&D Program of China ; National Natural Science Foundation of China ; Strategic Priority Research Program of the Chinese Academy of Sciences
其他责任者	Yuan, Fuping
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/79337]
专题	力学研究所_非线性力学国家重点实验室
推荐引用方式 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.