中国物理B ›› 2010, Vol. 19 ›› Issue (9): 96202-096202.doi: 10.1088/1674-1056/19/9/096202

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Influence of pressure on the solid state phase transformation of Cu–Al–Bi alloy

李工, 刘建华, 王文魁, 刘日平   

  1. State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, China
  • 收稿日期:2010-01-07 修回日期:2010-04-26 出版日期:2010-09-15 发布日期:2010-09-15
  • 基金资助:
    Project supported by the National Basic Research Program of China (Grant No. 2007CB616915/2006CB605201) and Program for Changjiang Scholars and Innovative Team (Grant No. IRT0650).

Influence of pressure on the solid state phase transformation of Cu–Al–Bi alloy

Li Gong(李工)†, Liu Jian-Hua(刘建华), Wang Wen-Kui(王文魁), and Liu Ri-Ping(刘日平)   

  1. State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, China
  • Received:2010-01-07 Revised:2010-04-26 Online:2010-09-15 Published:2010-09-15
  • Supported by:
    Project supported by the National Basic Research Program of China (Grant No. 2007CB616915/2006CB605201) and Program for Changjiang Scholars and Innovative Team (Grant No. IRT0650).

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摘要： The solid state phase transformation of Cu--Al--Bi alloy under high pressure was investigated by x-ray diffraction, energy dispersive spectroscopy and transmission electron microscopy. Experimental results show that the initial crystalline phase in the Cu--Al--Bi alloy annealed at 750 °C under the pressures in the range of 0--6 GPa is α-Cu solid solution (named as α-Cu phase below), and high pressure has a great influence on the crystallisation process of the Cu--Al--Bi alloy. The grain size of the α-Cu phase decreases with increasing pressure as the pressure is below about 3 GPa, and then increases (P>3 GPa). The mechanism for the effects of high pressure on the crystallisation process of the alloy has been discussed.

Abstract: The solid state phase transformation of Cu–Al–Bi alloy under high pressure was investigated by x-ray diffraction, energy dispersive spectroscopy and transmission electron microscopy. Experimental results show that the initial crystalline phase in the Cu–Al–Bi alloy annealed at 750℃ under the pressures in the range of 0–6 GPa is $\alpha$-Cu solid solution (named as $\alpha$-Cu phase below), and high pressure has a great influence on the crystallisation process of the Cu–Al–Bi alloy. The grain size of the $\alpha$-Cu phase decreases with increasing pressure as the pressure is below about 3 GPa, and then increases (P >3 GPa). The mechanism for the effects of high pressure on the crystallisation process of the alloy has been discussed.

Key words: Cu–Al–Bi alloy, high pressure, microstructure, grain growth

中图分类号: 

  • 6250