期刊
TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA
卷 23, 期 5, 页码 1342-1348出版社
ELSEVIER
DOI: 10.1016/S1003-6326(13)62602-3
关键词
Cu-Cr-Zr alloy; as-cast structure; in-situ composite; precipitated phase
资金
- Innovation Project of Shanghai Educational Committee in China [11YZ112]
- Shanghai Municipal Education Commission in China [J50503]
- Key Basic Research Project of Shanghai Committee of Science and Technology in China [10JC1411800]
- Shanghai Graduate Innovation Fund in China [JWCXSL1101]
The vacuum medium-frequency induction melting technology was employed to prepare the Cu-15%Cr-0.24%Zr alloy. The scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), transmission electron microscopy (TEM) and high-resolution transmission electron microscopy (BRTEM) were used to analyze the phase composition, morphology and structure of the alloy. The results reveal that the as-cast structure of the alloy consists of Cu matrix, Cr dendrite, eutectic Cr and Zr-rich phase. A large number of Cr-precipitated phases occur in the Cu matrix, and Cu5Zr particles can be found in the grain boundary of Cu matrix. The HRTEM images prove that there is a semi-coherent relationship between Cu5Zr and Cu matrix.
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