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中文摘要：
以自合成的BaZrO3粉体为材料制备成坩埚,在真空条件下熔炼了TiAl合金,并对熔炼后合金的显微组织及合金与BaZrO3耐火材料的界面反应情况进行研究。结果表明：熔炼后合金的显微组织由大量不同取向的片层状α2＋γ和少量条块状的γ相组成;合金熔体对BaZrO3耐火材料的润湿性较差,熔炼后未观察到界面反应层的存在;BaZrO3对合金熔体具有良好的化学惰性,是极具潜力的TiAl合金熔炼用耐火材料。
英文摘要：
A homemade BaZrO3 crucible was used to melt TiAl alloys, the microstructure of the melt TiAl alloys and interface reaction between the BaZrO3 refractory and TiAl melt were investigated. The results demonstrate that the microstructure of TiAl alloys is largely composed of lamellar α2＋γ with different orientations and small amount of bulk γ phase; the melts exhibit poor wettability with BaZrO3 refractory and no reaction layer is observed between them. This may imply that the BaZrO3 is a promising candidate of materials for the melting of TiAl alloys.
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