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Improving ductility by increasing fraction of interfacial zone in low C steel/304 SS laminates
He JY(何金燕); Ma Y(马彦); Yan DS(严定舜); Jiao SH; Yuan FP(袁福平); Wu XL(武晓雷)
发表期刊MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
2018-05-30
卷号726页码:288-297
ISSN0921-5093
摘要

Interfaces have been found to play an important role in mechanical behaviors of metals and alloys with heterogeneous microstructures. In present study, low C steel/304 stainless steel (SS) laminates with varying fractions of interfacial zone were fabricated by hot-rolled bonding, annealing and pickling, then cold rolling, subsequent annealing followed immediately by water quenching to study the effect of fraction of interfacial zone on the tensile properties. Heterogeneous distributions in chemical composition, grain size, phase and hardness were observed in the interfacial zone. The yield strength was observed to be constant with varying fractions of interfacial zone, while the ultimate strength and the uniform elongation were found to increase with increasing fraction of interfacial zone. High density of geometrically necessary dislocations (GNDs) were found to distribute in the interfacial zone and show a peak at the interface due to the mechanical incompatibility across the interface. Moreover, the density of GNDs was found to increase with increasing tensile strain in the interfacial zone. Back stress hardening was found to play an important role in the laminates, especially at the elasto-plastic transition stage. Higher fraction of interfacial zone can induce stronger back stress hardening and higher density of GNDs in the samples, thus resulting in better tensile ductility.

关键词Laminates Hot-rolled Bonding Strain Gradient Back Stress Hardening Geometrically Necessary Dislocations Mechanical Properties
DOI10.1016/j.msea.2018.04.102
收录类别SCI ; EI
语种英语
WOS记录号WOS:000434004600034
关键词[WOS]STRAIN-GRADIENT PLASTICITY ; AUSTENITIC STAINLESS-STEELS ; MECHANICAL-PROPERTIES ; NANOSTRUCTURED METAL ; TENSILE DEFORMATION ; INDUCED MARTENSITE ; LAMELLA STRUCTURES ; MAXIMUM STRENGTH ; COPPER ; COMPOSITES
WOS研究方向Science & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
项目资助者National Key R&D Program of China(2017YFA0204402) ; National Natural Science Foundation of China(11472286 ; Strategic Priority Research Program of the Chinese Academy of Sciences(XDB22040503) ; 11672313 ; 11572328 ; 11790293)
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力学所作者排名1
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被引频次:2[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://dspace.imech.ac.cn/handle/311007/77495
专题非线性力学国家重点实验室
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GB/T 7714
He JY,Ma Y,Yan DS,et al. Improving ductility by increasing fraction of interfacial zone in low C steel/304 SS laminates[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2018,726:288-297.
APA He JY,Ma Y,Yan DS,Jiao SH,Yuan FP,&Wu XL.(2018).Improving ductility by increasing fraction of interfacial zone in low C steel/304 SS laminates.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,726,288-297.
MLA He JY,et al."Improving ductility by increasing fraction of interfacial zone in low C steel/304 SS laminates".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 726(2018):288-297.
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