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Cu segregation and symbiotic precipitation at the dispersoid/matrix interface in a Cd-microalloyed Al-Cu-Mn alloy

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成果类型:
期刊论文
作者:
D.H. Liu;X.Z. Chen;R. Sun;X. Wu;H.W. Bai;...
通讯作者:
Y.H. Gao
作者机构:
[D.H. Liu; X.Z. Chen; R. Sun; X. Wu; H.W. Bai; X.C. Liu] Institute of Metals, College of Materials Science and Engineering, Changsha University of Science & Technology, Changsha 410004, China
[Y.H. Gao] School of Aerospace Engineering, North University of China, Taiyuan 030051, P.R. China
[Y.F. Zhao] School of Mechanical Engineering, North University of China, Taiyuan 030051, P.R. China
通讯机构:
[Y.H. Gao] S
School of Aerospace Engineering, North University of China, Taiyuan 030051, P.R. China
语种:
英文
关键词:
Al alloys;Microalloying;Interfacial segregation;Dispersoid;Precipitation
期刊:
Journal of Materials Research and Technology
ISSN:
2238-7854
年:
2025
机构署名:
本校为第一机构
院系归属:
材料科学与工程学院
摘要:
Manganese (Mn) generally is widely recognized for its effect on modifying the size and morphology of coarse Fe-rich constituents in Al-based alloys by forming fine Mn-rich dispersoids. However, this study suggests that in a Cd-micraolloyed Al-Cu-Mn-based alloy, Mn-rich dispersoids significantly promote Cu-rich precipitation at the interface during artificial aging (AA), leading to undesirable solute consumption of Cu and potential suppression of nanoprecipitation. With the help of atomic-resolution high-angle annular dark-field (HAADF) scanning...

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