Enhancing strength without compromising ductility in copper by combining extrusion machining and heat treatment

doi:10.1016/j.jmatprotec.2018.12.001

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

	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)
刊名	JOURNAL OF MATERIALS PROCESSING TECHNOLOGY
	2019-05-01
卷号	267 页码:52-60
关键词	Extrusion machining Heat treatment Mechanical property Recrystallization Subgrains
ISSN号	0924-0136
DOI	10.1016/j.jmatprotec.2018.12.001
英文摘要	It 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.
分类号	二类/Q1
WOS关键词	BULK NANOSTRUCTURED MATERIALS ; MECHANICAL-PROPERTIES ; GRAIN-REFINEMENT ; MICROSTRUCTURAL EVOLUTION ; DEFORMATION ; STEEL ; SIMULATION ; CU ; BOUNDARIES ; KINETICS
WOS研究方向	Engineering, Industrial ; Engineering, Manufacturing ; Materials Science, Multidisciplinary
语种	英语
WOS记录号	WOS:000458225600006
资助机构	National 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]
其他责任者	Cai, SL ; Dai, LH
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/78485]
专题	力学研究所_非线性力学国家重点实验室
作者单位	1.{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
推荐引用方式 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.