Effect of Process Parameters on the Mechanical Properties of Hastelloy X Alloy Fabricated by Selective Laser Melting

Mechanical properties of Hastelloy X alloys fabricated by selective laser melting were investigated and compared with the wrought counterpart. Nano-inclusions (Mo-rich carbides) distributed at the sub-grain boundaries in the selective laser-melted (SLMed) Hastelloy X alloy, whereas micron-scale precipitations existed in the wrought counterpart. The molten pool boundaries widely existed in the SLMed substrate, which acted as an initial site for...