Interface affected zone for optimal strength and ductility in heterogeneous laminate

doi:10.1016/j.mattod.2018.03.006

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

	Interface affected zone for optimal strength and ductility in heterogeneous laminate
	Huang CX ; Wang YF ; Ma XL ; Yin S; Hoppel HW ; Goken M ; Wu XL(武晓雷); Gao HJ(高华健); Zhu YT
刊名	MATERIALS TODAY
	2018-09-01
卷号	21 期号:7 页码:713-719
ISSN号	1369-7021
DOI	10.1016/j.mattod.2018.03.006
英文摘要	Interfaces have been reported to significantly strengthen and toughen metallic materials. However, there has been a long-standing question on whether interface-affected-zone (IAZ) exists, and how it might behave. Here we report in situ high-resolution strain mapping near interfaces in a copper-bronze heterogeneous laminate, which revealed the existence of IAZs. Defined as the zone with strain gradient, the IAZ was found to form by the dislocations emitted from the interface. The IAZ width remained largely constant with a magnitude of a few micrometers with increasing applied strain. Interfaces produced both back stress strengthening and work hardening, which led to both higher strength and higher ductility with decreasing interface spacing until adjacent IAZs started to overlap, after which a tradeoff between strength and ductility occurred, indicating the existence of an optimum interface spacing for the best mechanical properties. These findings are expected to help with designing laminates and other heterogeneous metals and alloys for superior mechanical properties.
分类号	一类
URL标识	查看原文
WOS关键词	STRAIN GRADIENT PLASTICITY ; NANO-GRAINED COPPER ; MECHANICAL-PROPERTIES ; PURE COPPER ; DEFORMATION ; SIZE ; METALS ; STEEL ; CU ; BOUNDARIES
WOS研究方向	Materials Science, Multidisciplinary
语种	英语
WOS记录号	WOS:000443440600011
资助机构	National Key R&D Program of China [2017YFA0204402, 2017YFA0204403] ; National Natural Science Foundation of China [11672195, 11572328] ; Sichuan Youth Science and Technology Foundation [2016JQ0047] ; US Army Research Office ; National Science Foundation [DMR-1709318] ; German Research Council (DFG)
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/77951]
专题	力学研究所_非线性力学国家重点实验室
作者单位	1.[Huang, C. X. 2.Wang, Y. F.] Sichuan Univ, Sch Aeronaut & Astronaut, Chengdu 610065, Sichuan, Peoples R China 3.[Ma, X. L. 4.Zhu, Y. T.] North Carolina State Univ, Dept Mat Sci & Engn, Raleigh, NC 27695 USA 5.[Yin, S. 6.Gao, H. J.] Brown Univ, Sch Engn, Providence, RI 02912 USA 7.[Hoeppel, H. W. 8.Goeken, M.] Friedrich Alexander Univ Erlangen Nurnberg, Dept Mat Sci & Engn, Inst Gen Mat Properties 1, Martensstr 5, D-91058 Erlangen, Germany 9.[Wu, X. L.] Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China 10.[Zhu, Y. T.] Nanjing Univ Sci & Technol, Jiangsu Key Lab Adv Micro & Nano Mat & Technol, Nanjing 210094, Jiangsu, Peoples R China
推荐引用方式 GB/T 7714	Huang CX,Wang YF,Ma XL,et al. Interface affected zone for optimal strength and ductility in heterogeneous laminate[J]. MATERIALS TODAY,2018,21(7):713-719.
APA	Huang CX.,Wang YF.,Ma XL.,Yin S.,Hoppel HW.,...&Zhu YT.(2018).Interface affected zone for optimal strength and ductility in heterogeneous laminate.MATERIALS TODAY,21(7),713-719.
MLA	Huang CX,et al."Interface affected zone for optimal strength and ductility in heterogeneous laminate".MATERIALS TODAY 21.7(2018):713-719.