Microstructure evolution of Cu-Mn alloy under laser ultra-high temperature gradient and rapid solidification condition

S. Yang, M. L. Zhong, Q. M. Zhang, W. D. Huang, W. J. Liu, Y. H. Zhou

科研成果: 期刊稿件文章同行评审

1 引用 (Scopus)

摘要

Laser rapid solidification experiments have been performed on Cu-26.6wt% Mn, Cu-27.3wt% Mn and Cu-31.4wt% Mn alloys to investigate their microstructures evolution with growth rate under ultra-high temperature gradient, respectively. The experimental results showed that the microstructure of Cu-26.6wt% Mn alloy changed from cellular to dendrite, super-fine cellular and segregation-free solid with the increase of growth rate; no dendrite growth appeared in the whole growth rate range for Cu-27.3wt% Mn and Cu-31.4wt% Mn alloy, whereas fully grew in the form of cellular. The critical rates of absolute stability for Cu-31.4wt%Mn, Cu-27.3wt%Mn and Cu-26.6wt% Mn alloys were 113.3, 212.6 and 260.5mm/s, respectively, which is reasonable agreement with that of the predicted By M-S theory.

源语言英语
页(从-至)1-5+13
期刊Hangkong Cailiao Xuebao/Journal of Aeronautical Materials
21
2
出版状态已出版 - 6月 2001
已对外发布

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