Abstract This paper discusses the fundamentals of a novel hybrid method to synthesize oxide dispersion strengthened (ODS) 304 L stainless steel (SS) alloy using a modified laser powder bed fusion (LPBF) machine. Previously, ODS metal matrix composites have been produced by LPBF via ball-milling, which is expensive to scale. Here, we selectively dope yttria nanoparticles into a SS matrix by jetting a precursor chemistry onto the SS substrate prior to laser conversion and consolidation. The new alloy shows good room temperature mechanical properties. Microstructures are studied using electron microscopy, energy dispersive spectroscopy and electron backscatter diffraction.

中文翻译：

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通过喷墨和激光粉末床融合生产的氧化物弥散强化 304 L 不锈钢

摘要 本文讨论了使用改进的激光粉末床熔融 (LPBF) 机合成氧化物弥散强化 (ODS) 304 L 不锈钢 (SS) 合金的新型混合方法的基本原理。以前，ODS 金属基复合材料是通过 LPBF 通过球磨生产的，这在规模上是昂贵的。在这里，我们通过在激光转换和固结之前将前体化学物质喷射到 SS 基材上，选择性地将氧化钇纳米粒子掺杂到 SS 基质中。新合金显示出良好的室温机械性能。使用电子显微镜、能量色散光谱和电子背散射衍射研究微观结构。