Analysis of phase in Cu-15%Cr-0.24%Zr alloy

作者：Bi, Li-ming; Liu, Ping^*; Chen, Xiao-hong; Liu, Xin-kuan; Li, Wei; Ma, Feng-cang

来源：Transactions of Nonferrous Metals Society of China, 2013, 23(5): 1342-1348.

DOI：10.1016/S1003-6326(13)62602-3

• Cu-Cr-Zr alloy
• as-cast structure
• in-situ composite
• precipitated phase

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.

• 出版日期2013-5
• 单位上海理工大学