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

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 pressu...

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Bibliographic Details
Published in:Chinese physics B 2010-09, Vol.19 (9), p.464-468
Main Author: 李工 刘建华 王文魁 刘日平
Format: Article
Language:English
Subjects:
COPPER ALLOYS (40 TO 99.3 CU)
COPPER ALUMINUM ALLOYS
Copper base alloys
CRYSTAL STRUCTURE
Crystallization
Diffraction
Grain size
GRAIN SIZE AND SHAPE
PHASE TRANSFORMATIONS
SOLID SOLUTIONS
Solid state
SOLID STATE PHYSICS
压力范围
合金相变
相转变
结晶过程
透射电子显微镜
铝铋合金
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Summary: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 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.
ISSN:1674-1056
2058-3834
DOI:10.1088/1674-1056/19/9/096202