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分析探讨了钛钒基 Ti V Cr Fe Zr 合金的熔炼特点和热处理工艺, 利用 X R D、 S E M 和电子“微探针”技术对合金微观结构进行了分析。结果表明: 真空电弧熔炼难以解决合金宏观成分偏析; 电弧熔炼后再进行真空感应熔炼可以解决合金成分的宏观偏析。当 Ti V Cr Fe Zr合金中锆含量很低时, 可以通过高温长时间保温和快速真空淬火工艺获得均质单相的固溶体合金。合金的固溶温度和降温速度对共析产物的生成有决定性影响。合金杂质元素( 尤其是氧) 对合金微观结构有显著影响。合金主相为钛钒基固溶体, 具有体心立方结构。
The melting characteristics and heat treatment process of titanium vanadium-based Ti V Cr Fe Zr alloy were analyzed. The microstructure of the alloy was analyzed by XRD, SEM and electronic “microprobe” technology. The results show that it is difficult to solve the macrosegregation of the alloy by vacuum arc melting. The macrosegregation of the alloy can be solved by vacuum induction melting after arc melting. When the content of zirconium in the Ti V Cr Fe Zr alloy is very low, the homogeneous single-phase solid solution alloy can be obtained by the high-temperature long-time heat preservation and the rapid vacuum quenching process. The solid solution temperature and cooling rate have a decisive influence on the formation of eutectoid products. Alloying elements (especially oxygen) have a significant effect on the microstructure of the alloy. The main phase of the alloy is a titanium vanadium-based solid solution with a body-centered cubic structure.