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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; Yan DS(严定舜); Jiao SH; Yuan FP(袁福平); Wu XL(武晓雷)
Source PublicationMATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
2018-05-30
Volume726Pages:288-297
ISSN0921-5093
Abstract

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.

KeywordLaminates Hot-rolled Bonding Strain Gradient Back Stress Hardening Geometrically Necessary Dislocations Mechanical Properties
DOI10.1016/j.msea.2018.04.102
Indexed BySCI ; EI
Language英语
WOS IDWOS:000434004600034
WOS KeywordSTRAIN-GRADIENT PLASTICITY ; AUSTENITIC STAINLESS-STEELS ; MECHANICAL-PROPERTIES ; NANOSTRUCTURED METAL ; TENSILE DEFORMATION ; INDUCED MARTENSITE ; LAMELLA STRUCTURES ; MAXIMUM STRENGTH ; COPPER ; COMPOSITES
WOS Research AreaScience & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering
WOS SubjectNanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
Funding OrganizationNational 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)
Classification一类
Ranking1
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Cited Times:4[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/77495
Collection非线性力学国家重点实验室
Recommended Citation
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 何金燕,Ma Y,严定舜,Jiao SH,袁福平,&武晓雷.(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 何金燕,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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