在多晶铸造高温合金中加入铼并观察其铸态组织,发现在(γ+γ')共晶附近有μ相和类树枝晶γ'相析出,测定合金中各种相的形成顺序和共晶反应偏析,分析了初生μ相和类树枝晶γ'相的形成机理,研究了Re在多晶铸造高温合金凝固过程中的作用和对合金凝固组织的影响.
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