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Effect of La addition on Ag-rich phase formation and mechanical properties of Cu-2Ag alloys
Hu, Peng-Hong1,2; Zhang, Shi-Hong1; Chen, Shuai-Feng1; Chen, Yan3; Song, Hong-Wu1
Corresponding AuthorSong, Hong-Wu(hwsong@imr.ac.cn)
2022-05-01
Source PublicationJOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
ISSN2238-7854
Volume18Pages:998-1008
AbstractA series of novel Cu-2Ag-xLa alloys with reinforced mechanical properties and enhanced electrical conductivities are developed. The effects of La addition on the microstructural features and mechanical properties of as-cast and solution treated Cu-2Ag alloys are systematically investigated. The yielding strength of as-cast Cu-2Ag alloys with 0.02La and 0.07La (wt.%) is considerably reinforced by relative amounts of 55.56% and 30.16%, respectively. The strengthening mechanism for such increased yielding strength is mainly related to the shifting of interfacial relation between matrix and Ag-rich phase from original semicoherent type to non-coherent type with La doping. Consequently, the interface barrier strength is enhanced by the non-coherent interface, and contributes to the increased yielding strength. Meanwhile, the strengthening effect from La addition closely depends on the exact contents of La element. As La content increases from 0.02 to 0.07 (wt.%), the strengthening effect becomes weaker because of the increased space of Ag-rich phases leading to an 16.33% decrease in yield strength. Additionally, La has dual effects on the dissolution of Ag-rich phases and precipitation of new La-rich phase in the as-cast alloys during solution treatment. Simultaneously, the precipitation of the La-rich phase abnormally enhances the electrical conductivity of the solution La-containing alloys when the solution time exceeds 24 h. (C) 2022 The Author(s). Published by Elsevier B.V.
KeywordCopper alloy Rare earth Ag-rich phase Strength Electrical conductivity
Funding OrganizationChinese Academy of Science and Technology Service Network Initiative ; Key Research and Development Program of Jiangxi Province, China
DOI10.1016/j.jmrt.2022.03.020
Indexed BySCI
Language英语
Funding ProjectChinese Academy of Science and Technology Service Network Initiative[KFJ-STS-QYZD-145] ; Key Research and Development Program of Jiangxi Province, China[20203ABC28W004]
WOS Research AreaMaterials Science ; Metallurgy & Metallurgical Engineering
WOS SubjectMaterials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS IDWOS:000793133900010
PublisherELSEVIER
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/173996
Collection中国科学院金属研究所
Corresponding AuthorSong, Hong-Wu
Affiliation1.Chinese Acad Sci, Inst Met Res, Shi Changxu Innovat Ctr Adv Mat, Shenyang 110016, Peoples R China
2.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China
3.Jiangxi Copper Technol Res Acad Co Ltd, Nanchang 330029, Jiangxi, Peoples R China
Recommended Citation
GB/T 7714
Hu, Peng-Hong,Zhang, Shi-Hong,Chen, Shuai-Feng,et al. Effect of La addition on Ag-rich phase formation and mechanical properties of Cu-2Ag alloys[J]. JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T,2022,18:998-1008.
APA Hu, Peng-Hong,Zhang, Shi-Hong,Chen, Shuai-Feng,Chen, Yan,&Song, Hong-Wu.(2022).Effect of La addition on Ag-rich phase formation and mechanical properties of Cu-2Ag alloys.JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T,18,998-1008.
MLA Hu, Peng-Hong,et al."Effect of La addition on Ag-rich phase formation and mechanical properties of Cu-2Ag alloys".JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T 18(2022):998-1008.
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