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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
Corresponding AuthorRen, C. X.(cxren15s@imr.ac.cn) ; Wang, Q.(gmwang@imr.ac.cn) ; Zhang, Z. F.(zhfzhang@imr.ac.cn)
2020-06-01
Source PublicationMATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
ISSN0921-5093
Volume786Pages:12
AbstractSynchronous 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.
KeywordCu-Al alloy Strength Ductility Grain size Gradient structure
Funding OrganizationNational Natural Science Foundation of China (NSFC) ; LiaoNing Revitalization Talents Program
DOI10.1016/j.msea.2020.139441
Indexed BySCI
Language英语
Funding ProjectNational Natural Science Foundation of China (NSFC)[U1664253] ; LiaoNing Revitalization Talents Program[XLYC1808027]
WOS Research AreaScience & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering
WOS SubjectNanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS IDWOS:000541737900034
PublisherELSEVIER SCIENCE SA
Citation statistics
Cited Times:10[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/139539
Collection中国科学院金属研究所
Corresponding AuthorRen, C. X.; Wang, Q.; Zhang, Z. F.
Affiliation1.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
Recommended Citation
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.
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