IMECH-IR  > 非线性力学国家重点实验室
Strain hardenability of a gradient metallic alloy under high-strain-rate compressive loading
Fan JT1; Jiang MQ(蒋敏强)2
Corresponding AuthorFan, Jitang(Jitang_fan@hotmail.com)
Source PublicationMATERIALS & DESIGN
2019-05-15
Volume170Pages:8
ISSN0264-1275
AbstractSubjected to an impact loading, metallic alloys usually display strain softening due to the highly localized shear deformation accompanied by temperature rise, which causes the decrease of resistance to an applied loading and even catastrophic failure. In this work, strain hardening under high-rate compressive loading is firstly achieved in a developed metallic alloy with the gradient microstructure of both phases and grain sizes. Mechanical responses at different compressive loading rates all show a unique strain hardening. Rate dependencies of yielding and strain hardening are revealed and illustrated by a modified Johnson-Cook constitutive model. Dynamic deformation and fracture are characterized as macroscopic shear with the shielded cracks. The inherent toughening mechanisms are indicated as gradient straining with phase transformation, twinning and dislocation tangling. This work demonstrates that the highly localized shear deformation accompanied by temperature rise can be prevented by the gradient microstructure with martensitic transformations, twinnings and dislocations. It is full of interest to create a feasible route of developing the strain hardenable metallic alloys under impact loadings via architecturing the gradient microstructure. (C) 2019 The Authors. Published by Elsevier Ltd.
KeywordMetallic alloy Gradient microstructure design Impact loading Strain hardening Rate dependency Dynamic fracture
DOI10.1016/j.matdes.2019.107695
Indexed BySCI ; EI
Language英语
WOS IDWOS:000462900600004
WOS KeywordMECHANICAL-BEHAVIOR ; GLASS COMPOSITES ; CUZR MARTENSITE ; STRENGTH ; FRACTURE ; STEEL ; DEFORMATION ; PLASTICITY ; IMPACT ; DAMAGE
WOS Research AreaMaterials Science
WOS SubjectMaterials Science, Multidisciplinary
Funding ProjectBeijing Institute of Technology Research Fund Program for Young Scholars, China ; Independent Research Project of State Key Laboratory of Explosion Science and Technology, China[QNKT17-03] ; Fundamental Research Funds for the Central Universities, China ; National Natural Science Foundation of China, China[11602024]
Funding OrganizationBeijing Institute of Technology Research Fund Program for Young Scholars, China ; Independent Research Project of State Key Laboratory of Explosion Science and Technology, China ; Fundamental Research Funds for the Central Universities, China ; National Natural Science Foundation of China, China
Classification二类/Q1
Ranking2
Citation statistics
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/78935
Collection非线性力学国家重点实验室
Affiliation1.Beijing Inst Technol, State Key Lab Explos Sci & Technol, Beijing 100081, Peoples R China;
2.Chinese Acad Sci, State Key Lab Nonlinear Mech, Inst Mech, Beijing 100190, Peoples R China
Recommended Citation
GB/T 7714
Fan JT,Jiang MQ. Strain hardenability of a gradient metallic alloy under high-strain-rate compressive loading[J]. MATERIALS & DESIGN,2019,170:8.
APA Fan JT,&蒋敏强.(2019).Strain hardenability of a gradient metallic alloy under high-strain-rate compressive loading.MATERIALS & DESIGN,170,8.
MLA Fan JT,et al."Strain hardenability of a gradient metallic alloy under high-strain-rate compressive loading".MATERIALS & DESIGN 170(2019):8.
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