Exploring the strength and ductility improvement of Cu-Al alloys

doi:10.1016/j.msea.2020.139441

IMR OpenIR

	Exploring the strength and ductility improvement of Cu-Al alloys
	Ren, C. X.1,2; Wang, Q.1,3; Hou, J. P.1; Zhang, Z. J.1,3; Yang, H. J.1; Zhang, Z. F.1,2,3
通讯作者	Ren, C. X.(cxren15s@imr.ac.cn) ; Wang, Q.(gmwang@imr.ac.cn) ; Zhang, Z. F.(zhfzhang@imr.ac.cn)
	2020-06-01
发表期刊	MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
ISSN	0921-5093
卷号	786 页码:12
摘要	Synchronous improvement of the strength and ductility for metallic materials is an everlasting object as the good service performance. In this study, the yield strength (sigma(YS)) and uniform elongation (epsilon(UE)) of Cu-Al alloys with three Al contents, nine grain sizes induced by the controlled annealing treatment, and three gradient structures induced by surface spinning strengthening (3S) treatment were explored. Results show that the sigma(YS) and epsilon(UE) may be enhanced synchronously by increasing Al content from 5Al, 8Al to 11Al, while the sigma(YS) decreases and epsilon(UE) increases when increasing grain size from ultra-fined grain, fine grain to coarse grain, and the sigma(YS) increases obviously and epsilon(UE) decreases slightly by constructing the gradient layer. The trade-off relation between strength and ductility is broken through by increasing Al content, however cannot be broken through by controlling grain size, and cannot be directly broken through by constructing gradient structure. In addition, the Cu-Al alloys with the high Al content, fine grain and gradient layers obtain the superior combination of strength and ductility, and the reason is that the solid-solution strengthening, boundary strengthening and work hardening are combined together. Inspired by these, the composition design, grain size regulation, and gradient structure construction may be considered as the three feasible approaches to enhance the strength and ductility of metallic materials.
关键词	Cu-Al alloy Strength Ductility Grain size Gradient structure
资助者	National Natural Science Foundation of China (NSFC) ; LiaoNing Revitalization Talents Program
DOI	10.1016/j.msea.2020.139441
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China (NSFC)[U1664253] ; LiaoNing Revitalization Talents Program[XLYC1808027]
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
WOS记录号	WOS:000541737900034
出版者	ELSEVIER SCIENCE SA
引用统计	被引频次：30[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/139539
专题	中国科学院金属研究所
通讯作者	Ren, C. X.; Wang, Q.; Zhang, Z. F.
作者单位	1.Chinese Acad Sci, Inst Met Res, Lab Fatigue & Fracture Mat, Shenyang 110016, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Hefei 230026, Peoples R China 3.Jihua Lab, Foshan 528200, Peoples R China
推荐引用方式 GB/T 7714	Ren, C. X.,Wang, Q.,Hou, J. P.,et al. Exploring the strength and ductility improvement of Cu-Al alloys[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2020,786:12.
APA	Ren, C. X.,Wang, Q.,Hou, J. P.,Zhang, Z. J.,Yang, H. J.,&Zhang, Z. F..(2020).Exploring the strength and ductility improvement of Cu-Al alloys.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,786,12.
MLA	Ren, C. X.,et al."Exploring the strength and ductility improvement of Cu-Al alloys".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 786(2020):12.