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Mechanisms for refining precipitation and improving strengthening of annealed Cu-2Ag alloy via La modification
Hu, Peng-Hong1,2; Song, Hong-Wu1; Chen, Yan1; Chen, Fei-Peng3; Zhang, Shi-Hong1
Corresponding AuthorZhang, Shi-Hong(shzhang@imr.ac.cn)
2021-11-25
Source PublicationJOURNAL OF ALLOYS AND COMPOUNDS
ISSN0925-8388
Volume883Pages:13
AbstractA new Cu-2Ag-0.14La alloy is developed to enhance the mechanical property and electrical conductivity with inducement of Ag-rich primary phases and finer nanoscale Ag precipitates. The microstructural evolution and mechanical properties of Cu-2Ag-0.14La and Cu-2Ag alloys obtained by drawing and annealing were then summarized and analyzed. The results indicate that both the yielding and ultimate tensile strengths of annealed Cu-2Ag-0.14La alloy were reinforced after La modification. The average grain sizes of two alloys increase during annealing, but the size ratio (RCu-2Ag-0.14La/RCu-2Ag) dramatically varies with rising the heat temperature, evolving from 70.48% at 400 degrees C to 43.78% at 650 degrees C. Meanwhile, it is found that the refined grains sizes in Cu-2Ag-0.14La alloy are closely related to the nano-scale precipitates (similar to 450 nm), which hinder the formation of subgrain boundaries at 400 degrees C, and impose a stronger pinning effect on boundary migration of recrystallized grains during annealing (>= 450 degrees C). Consequently, higher hardness and electrical conductivity are contributed by grain refinement and dispersion strengthening of the nanosized phases. (C) 2021 Elsevier B.V. All rights reserved.
KeywordCu-Ag-La Recrystallization Precipitation strengthening Grain refinement Rare earth
Funding OrganizationChinese Academy of Science and Technology Service Network Planning (China) ; Key Research and Development Program of Jiangxi Province (China)
DOI10.1016/j.jallcom.2021.160912
Indexed BySCI
Language英语
Funding ProjectChinese Academy of Science and Technology Service Network Planning (China)[KFJ-STS-QYZD-145] ; Key Research and Development Program of Jiangxi Province (China)[20203ABC28W004]
WOS Research AreaChemistry ; Materials Science ; Metallurgy & Metallurgical Engineering
WOS SubjectChemistry, Physical ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS IDWOS:000679184800003
PublisherELSEVIER SCIENCE SA
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/159627
Collection中国科学院金属研究所
Corresponding AuthorZhang, Shi-Hong
Affiliation1.Chinese Acad Sci, Shi Changxu Innovat Ctr Adv Mat, Inst Met Res, 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,Song, Hong-Wu,Chen, Yan,et al. Mechanisms for refining precipitation and improving strengthening of annealed Cu-2Ag alloy via La modification[J]. JOURNAL OF ALLOYS AND COMPOUNDS,2021,883:13.
APA Hu, Peng-Hong,Song, Hong-Wu,Chen, Yan,Chen, Fei-Peng,&Zhang, Shi-Hong.(2021).Mechanisms for refining precipitation and improving strengthening of annealed Cu-2Ag alloy via La modification.JOURNAL OF ALLOYS AND COMPOUNDS,883,13.
MLA Hu, Peng-Hong,et al."Mechanisms for refining precipitation and improving strengthening of annealed Cu-2Ag alloy via La modification".JOURNAL OF ALLOYS AND COMPOUNDS 883(2021):13.
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