IMECH-IR  > 非线性力学国家重点实验室
Enhancing strength without compromising ductility in copper by combining extrusion machining and heat treatment
Liu Y; Cai SL; Xu FG; Wang YJ(王云江); Dai LH(戴兰宏)
Source PublicationJOURNAL OF MATERIALS PROCESSING TECHNOLOGY
2019-05-01
Volume267Pages:52-60
ISSN0924-0136
AbstractIt is a challenge to produce metallic materials with high strength and good ductility. Improving the strength of metallic materials usually sacrifices the ductility or work-hardening capacity. Here combining extrusion machining and heat treatment, we improve the strength of copper without losing strain hardening capacity and therefore the ductility remains. Copper was first deformed by extrusion machining at shear strain 3.1 and then annealed at 523 K for 5 min. Compared with the initial workpiece, the processed copper possesses five times higher yield strength and alike work hardening behavior. Microstructural characterizations illustrate that high strength and high strain hardening are attributed to the hierarchical microstructure that the recrystallized grains are surrounded by elongated subgrains. Finally, an analytical modeling was employed to rationalize the mechanical properties of copper processed by the proposed strategy. The theoretical results are in agreement with the experimental measurements.
KeywordExtrusion machining Heat treatment Mechanical property Recrystallization Subgrains
DOI10.1016/j.jmatprotec.2018.12.001
Indexed BySCI ; EI
Language英语
WOS IDWOS:000458225600006
WOS KeywordBULK NANOSTRUCTURED MATERIALS ; MECHANICAL-PROPERTIES ; GRAIN-REFINEMENT ; MICROSTRUCTURAL EVOLUTION ; DEFORMATION ; STEEL ; SIMULATION ; CU ; BOUNDARIES ; KINETICS
WOS Research AreaEngineering, Industrial ; Engineering, Manufacturing ; Materials Science, Multidisciplinary
WOS SubjectEngineering ; Materials Science
Funding OrganizationNational Key Research and Development Program of China [2017YFB0702003] ; National Natural Science Foundation of China [11602236, 11132011, 11802013] ; Fundamental Research Funds for the Central Universities [FRF-BR-17-015A] ; Strategic Priority Research Program of the Chinese Academy of Sciences [XDB22040302, XDB22040303] ; Key Research Program of Frontier Sciences [QYZDJSSW-JSC011]
Classification二类/Q1
Ranking1
Citation statistics
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/78485
Collection非线性力学国家重点实验室
Affiliation1.{Liu, Yao} Univ Sci & Technol Beijing, Sch Math & Phys, Beijing 100083, Peoples R China
2.{Cai, Songlin} State Grid Corp China, China Elect Power Res Inst, Beijing 100192, Peoples R China
3.{Xu, Fengguang} Univ Sci & Technol Beijing, Basic Expt Ctr Nat Sci, Beijing 100083, Peoples R China
4.{Wang, Yunjiang、Dai, Lanhong} Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China
5.{Wang, Yunjiang、Dai, Lanhong} Univ Chinese Acad Sci, Sch Engn Sci, Beijing 101408, Peoples R China
Recommended Citation
GB/T 7714
Liu Y,Cai SL,Xu FG,et al. Enhancing strength without compromising ductility in copper by combining extrusion machining and heat treatment[J]. JOURNAL OF MATERIALS PROCESSING TECHNOLOGY,2019,267:52-60.
APA Liu Y,Cai SL,Xu FG,王云江,&戴兰宏.(2019).Enhancing strength without compromising ductility in copper by combining extrusion machining and heat treatment.JOURNAL OF MATERIALS PROCESSING TECHNOLOGY,267,52-60.
MLA Liu Y,et al."Enhancing strength without compromising ductility in copper by combining extrusion machining and heat treatment".JOURNAL OF MATERIALS PROCESSING TECHNOLOGY 267(2019):52-60.
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