Abstract This paper presents the first comprehensive study on additive manufacturing of a high-melting near-eutectic Mo–Si–B alloy by laser powder bed fusion (L-PBF). An overview about the ambient and high temperature material properties of a Mo-16.5Si-7.5B alloy is given. Therefore, the near-eutectic Mo–Si–B alloy was gas atomized and the powder was analyzed. After developing suitable process parameters for the generation of crack-free samples, the microstructure of the L-PBF material was analyzed in detail using SEM/EDS and EBSD analyses. In terms of mechanical properties, the brittle-to-ductile transformation temperature (BDTT) and the creep rate at a potential application temperature were determined.

中文翻译：

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近共晶 Mo-Si-B 合金的增材制造：加工和性能

摘要 本文首次全面研究了通过激光粉末床熔融 (L-PBF) 对高熔点近共晶 Mo-Si-B 合金进行增材制造。概述了 Mo-16.5Si-7.5B 合金的环境温度和高温材料特性。因此，对近共晶 Mo-Si-B 合金进行气雾化，并对粉末进行分析。在为无裂纹样品的生成制定合适的工艺参数后，使用 SEM/EDS 和 EBSD 分析详细分析了 L-PBF 材料的微观结构。在机械性能方面，确定了脆韧转变温度 (BDTT) 和潜在应用温度下的蠕变速率。