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：

Liu, D. H.;Chen, X. Z.;Sun, R.;Wu, X.;Bai, H. W.;...

通讯作者：

Liu, X;Gao, Y

作者机构：

[Chen, X. Z.; Sun, R.; Wu, X.; Bai, H. W.; Liu, D. H.; Liu, X. C.] Changsha Univ Sci & Technol, Inst Met, Coll Mat Sci & Engn, Changsha 410004, Peoples R China.

[Gao, Y. H.] North Univ China, Sch Aerosp Engn, Taiyuan 030051, Peoples R China.

[Zhao, Y. F.] North Univ China, Sch Mech Engn, Taiyuan 030051, Peoples R China.

通讯机构：

[Gao, Y ] N

[Liu, X ] C

Changsha Univ Sci & Technol, Inst Met, Coll Mat Sci & Engn, Changsha 410004, Peoples R China.

North Univ China, Sch Aerosp Engn, Taiyuan 030051, Peoples 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

卷：

页码：

7204-7214

DOI：

10.1016/j.jmrt.2025.03.023

基金类别：

National Natural Science Foun-dation of China [52301025, 52204371, 52371177, 52301179]; Fundamental Research Program of Shanxi Province [202203021222039, 202203021212124]; Post-doctoral Fellowship Program (Grade C) of China Postdoctoral Science Foundation [GZC20241573]

机构署名：

本校为第一且通讯机构

院系归属：

材料科学与工程学院

摘要：

Manganese (Mn) 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 transmi...

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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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