Abstract
The intensive high-strength martensitic stainless steel (IHMSS) was designed and prepared. Influences of various parameters of electrode-induced gas atomization (EIGA) on qualities of IHMSS powders were investigated through the orthogonal test design. The IHMSS powders prepared through the optimized technology present a favorable comprehensive quality. The additive manufacturability of IHMSS powder was explored by laser cladding with coaxial powder feeding. Effects of parameters on the forming quality of IHMSS laser-cladded layers were explored. The microstructures and properties of the IHMSS deposit were characterized. Obvious macrosegregation at the interface between the base plate and the deposit and the mechanical properties deliver significant anisotropy. The sample along the Y direction (laser scanning direction) shows the highest tensile strength of 1385 MPa and elongation of 25.7%); the sample along the Z direction (vertical direction) is found to have the lowest tensile strength of 1068 MPa and elongation of 12.2%.
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