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通过冲熔法和包芯线技术将Zr元素添加到熔液中,制备Cu-Cr-Zr合金,比较两种不同方法所得合金的Zr元素收得率,并分析Cu-Cr-Zr合金的铸态显微组织。结果表明,包芯线技术较冲熔法能显著提高Zr元素收得率,提高约32.54%,从而使得生产成本降低。Cu-Cr-Zr合金的铸态组织中主要存在3相,即基体Cu、富Cr相和富CuZr相,不存在富CrZr相,其中富Cr相呈纤维针状和颗粒状,主要分布在基体上,部分Cr与Zr形成三元共晶组织;富CuZr相呈不规则块状,主要分布在晶界上。
The Zr element was added into the melt by the red-melt method and the cored wire technique to prepare the Cu-Cr-Zr alloy. The Zr-element yield of the alloys obtained by the two different methods was compared, and the castings of the Cu-Cr-Zr alloy Microstructure. The results show that the cored wire technology can significantly improve the recovery rate of Zr element by about 32.54% as compared with the red melting method, resulting in lower production cost. The as-cast Cu-Cr-Zr alloy mainly consists of three phases, namely Cu matrix, Cr-rich phase and CuZr-rich phase, without CrZr-rich phase. The Cr-rich phase is fibrous and needle-like and mainly distributed in the matrix On the other hand, some Cr and Zr form ternary eutectic structure. The CuZr-rich phase is irregularly massive and mainly distributed on the grain boundary.