Electron beam powder bed fusion (EBPBF) was used to fabricate a Ti–48Al–2Cr–2Nb alloy incorporated with 0.2 wt% YO nano-ceramic powders. Spherical YO nanoparticles with the particle size of 20–40 nm were uniformly distributed throughout the as-built TiAl alloy, and the average particle size was 30 nm. The effect of YO nanoparticles on compressive creep properties was investigated and the creep tests were performed at 750 and 800 °C, respectively, with a stress of 250 MPa. The results showed that the compressive creep properties were significantly improved by YO nanoparticles. After 50h

中文翻译：

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电子束粉末床熔合增材制造的含 Y2O3 Ti-48Al-2Cr-2Nb 合金的增强压缩蠕变性能

电子束粉末床熔合 (EPBBF) 用于制造掺有 0.2 wt% YO 纳米陶瓷粉末的 Ti-48Al-2Cr-2Nb 合金。粒径为20~40 nm的球形YO纳米粒子均匀分布在整个TiAl合金中，平均粒径为30 nm。研究了 YO 纳米颗粒对压缩蠕变性能的影响，并分别在 750 和 800 °C、250 MPa 的应力下进行蠕变测试。结果表明，YO纳米粒子显着改善了压缩蠕变性能。50小时后