Investigation of the interface precipitation on α-Al(Fe,Mn)Si particles in Al–Fe–Mn–Si–Mg–Cu alloy

Zhipeng Yuan; Yifan Lu; Zhikang Yang; Yiyou Tu; Ting Yuan; Liang Huang; Zenglei Ni; Xingxing Wang; Zili Liu; Peng He

Journal of Materials Research and Technology (Jan 2024)

Investigation of the interface precipitation on α-Al(Fe,Mn)Si particles in Al–Fe–Mn–Si–Mg–Cu alloy

Zhipeng Yuan,
Yifan Lu,
Zhikang Yang,
Yiyou Tu,
Ting Yuan,
Liang Huang,
Zenglei Ni,
Xingxing Wang,
Zili Liu,
Peng He

Affiliations

Zhipeng Yuan: School of Materials Science and Engineering, North China University of Water Resources and Electric Power, Zhengzhou, 450040, China
Yifan Lu: School of Materials Science and Engineering, North China University of Water Resources and Electric Power, Zhengzhou, 450040, China
Zhikang Yang: School of Materials Science and Engineering, North China University of Water Resources and Electric Power, Zhengzhou, 450040, China
Yiyou Tu: School of Materials Science and Engineering, Southeast University, Nanjing, 211189, China
Ting Yuan: School of Materials Engineering, Changshu Institute of Technology, Changshu, 215500, China; Corresponding author.
Liang Huang: School of Materials Science and Engineering, North China University of Water Resources and Electric Power, Zhengzhou, 450040, China
Zenglei Ni: School of Materials Science and Engineering, North China University of Water Resources and Electric Power, Zhengzhou, 450040, China
Xingxing Wang: School of Materials Science and Engineering, North China University of Water Resources and Electric Power, Zhengzhou, 450040, China; Corresponding author.
Zili Liu: College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing, 210016, China
Peng He: State Key Laboratory of Advanced Welding and Joining, Harbin Institute of Technology, Harbin, 150001, China

Journal volume & issue: Vol. 28
pp. 4531 – 4539

Abstract

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The effects of particles on precipitation reactions in aluminum alloy have been widely unknown. Al–Fe–Mn–Si–Mg–Cu alloy strengthened with uniformly distributed Al(Fe,Mn)Si nanoparticles was successfully produced in this study. The alloy was then characterised using high-resolution scanning transmission electron microscopy (HRTEM), to provide a fundamental insight into the interface precipitation. Interfacial precipitations of several tens of nanometers in size was formed after aging, which were found to be Al5Cu6Mg2 and Si phases. The results demonstrated that the facetted α-Al(Fe,Mn)Si particles had a significant influence on precipitation adjacent to the α-Al(Fe,Mn)Si/Al interfaces. Semi-coherent α-Al(Fe,Mn)Si/Al interfaces were revealed to have periodically spaced misfit dislocations that are generally considered to be beneficial to heterogeneous precipitation. They not only reduce nucleation energy barriers but also act as short-circuit diffusion paths to accelerate growth rates by transporting solute atoms and vacancies.

Published in Journal of Materials Research and Technology

ISSN: 2238-7854 (Print); 2214-0697 (Online)
Publisher: Elsevier
Country of publisher: Netherlands
LCC subjects: Technology: Mining engineering. Metallurgy
Website: https://www.journals.elsevier.com/journal-of-materials-research-and-technology/

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