Microstructural refinement and performance improvement of Cu–36 wt% Zn alloy by Al2O3 nanoparticles coupling electromagnetic stirring

Ya Bo Fu, Yi Ping Lu, Zhi Jun Wang, Zhi Qiang Cao, Ai Jiao Xu

科研成果: 期刊稿件文章同行评审

9 引用 (Scopus)

摘要

Cu–36 wt% Zn alloy is widely used in valves of water and heating and auto parts, etc. Nevertheless, the structure is still coarse, and performances are much poor. The structure and performances of Cu–36 wt% Zn alloy were investigated by adding Al2O3 nanoparticles and stirring. Results indicate that by Al2O3 nanoparticles coupling electromagnetic stirring, the Cu–36 wt% Zn alloy with refined microstructure was successfully prepared. The average grain size is refined by 99 % compared with that without nanoparticles and stirring. The tensile strength (Rm) and percentage elongation after fracture (A11.3) increase by 20.58 % and 19.40 %, respectively, compared with that without nanoparticles and stirring. Nanoparticles increase heterogeneous nucleation rate by 50 % compared with that without nanoparticles. The depth of dezincification layer decreases by 78.71 % compared with that without nanoparticles and stirring, as protective layer (Cu–Al2O3–Zn) is completely formed around the grain boundaries.

源语言英语
页(从-至)3560-3565
页数6
期刊Rare Metals
41
10
DOI
出版状态已出版 - 10月 2022

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