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Role of Multi-Scale Microstructure in the Degradation of Al Wire for Power Transmission
Li, Rui1; Liu, Hanzhong2,3,4; Ma, Heng1; Hou, Jiapeng2; Qian, Liqun1; Wang, Qiang2; Li, Xiaowu3,4; Zhang, Zhefeng2
Corresponding AuthorHou, Jiapeng(jphou@imr.ac.cn) ; Zhang, Zhefeng(zhfzhang@imr.ac.cn)
2020-04-01
Source PublicationAPPLIED SCIENCES-BASEL
Volume10Issue:7Pages:13
AbstractAs common conductive materials, Al wires are used on overhead transmission lines under long-term heating conditions. In this study, the strength degradation behavior and the strength-electrical conductivity relation of the commercially pure Al wires (CPAWs) and the Al-Fe wires (AFWs) annealed at various temperatures were investigated based on the microstructure evolution. The strength degradation rate of the AFW is always higher than that of the CPAW. A linear trade-off relation between strength and electrical conductivity for the annealed Al wires are clarified. The results reveal that the mechanisms behind the trade-off relation between the strength and the electrical conductivity for the annealed CPAWs and the annealed AFWs are the recovery of dislocations and the obvious increase of grain width, which leads to the decrease of strength and the increase of electrical conductivity. The coalescence of precipitate in the AFW leads to the obvious decrease of strength, which results in the higher strength degradation rate for the AFW as compared with that for the CPAW. Consequently, the principle of microstructure design for anti-degradation of Al wire is presented.
Keywordcommercially pure Al wire Al-Fe wire strength degradation electrical conductivity annealing treatment
Funding OrganizationState Grid Corporation of China
DOI10.3390/app10072234
Indexed BySCI
Language英语
Funding ProjectState Grid Corporation of China[5211HD180007]
WOS Research AreaChemistry ; Engineering ; Materials Science ; Physics
WOS SubjectChemistry, Multidisciplinary ; Engineering, Multidisciplinary ; Materials Science, Multidisciplinary ; Physics, Applied
WOS IDWOS:000533356200033
PublisherMDPI
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/139322
Collection中国科学院金属研究所
Corresponding AuthorHou, Jiapeng; Zhang, Zhefeng
Affiliation1.Zhejiang Huadian Equipment Testing Inst, Natl Qual Supervis & Inspect Ctr Elect Equipment, Hangzhou 310015, Peoples R China
2.Chinese Acad Sci, Inst Met Res, Lab Fatigue & Fracture Mat, 72 Wenhua Rd, Shenyang 110016, Peoples R China
3.Northeastern Univ, Sch Mat Sci & Engn, Dept Mat Phys & Chem, Minist Educ, Shenyang 110819, Peoples R China
4.Northeastern Univ, Key Lab Anisotropy & Texture Mat, Minist Educ, Shenyang 110819, Peoples R China
Recommended Citation
GB/T 7714
Li, Rui,Liu, Hanzhong,Ma, Heng,et al. Role of Multi-Scale Microstructure in the Degradation of Al Wire for Power Transmission[J]. APPLIED SCIENCES-BASEL,2020,10(7):13.
APA Li, Rui.,Liu, Hanzhong.,Ma, Heng.,Hou, Jiapeng.,Qian, Liqun.,...&Zhang, Zhefeng.(2020).Role of Multi-Scale Microstructure in the Degradation of Al Wire for Power Transmission.APPLIED SCIENCES-BASEL,10(7),13.
MLA Li, Rui,et al."Role of Multi-Scale Microstructure in the Degradation of Al Wire for Power Transmission".APPLIED SCIENCES-BASEL 10.7(2020):13.
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