Abstract Using powder-based directed energy deposition (DED), composite materials can easily be produced by mixing powders. In this study, a foam stainless block is fabricated through DED by combining SUS316L and titanium-hydride (TiH2) powders together. Although TiH2 successfully foams the melt pool and leaves many pores inside the deposit, it is difficult to enhance the porosity rate because the porous structure is destroyed when the upper layer is deposited. This study demonstrates a laser power control and deposition trajectory that can be used to create a low-density porous structure and measures the compression strength of the fabricated block.

中文翻译：

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定向能量沉积不锈钢泡沫块的制备方法

摘要 使用基于粉末的定向能量沉积 (DED)，可以通过混合粉末轻松生产复合材料。在这项研究中，通过将 SUS316L 和氢化钛 (TiH2) 粉末结合在一起，通过 DED 制造了泡沫不锈钢块。尽管 TiH2 成功地使熔池发泡并在沉积物内部留下许多孔隙，但由于沉积上层时多孔结构被破坏，因此难以提高孔隙率。这项研究展示了激光功率控制和沉积轨迹，可用于创建低密度多孔结构并测量制造块的抗压强度。