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Nb-Si基超高温合金由于熔点高、密度低和优良的高温强度等特点受到广泛关注,极具作为下一代高推重比航空发动机和超然冲压发动机的热端部件用材料的潜力.本文主要介绍了国内外在合金化、粉末冶金、定向凝固和热处理工艺对Nb-Si基合金组织和性能影响等方面的研究现状,并展望了其发展趋势.

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