Laser-aided additive manufacturing is used for complex shapes and Ni-based superalloy parts. This study aimed to optimize the process of Hastelloy X alloy obtain its excellent mechanical properties without pores or cracks in additively manufactured The was analyzed by comparing porosity, microstructure, as-built post-heat treatment conditions. In addition, existing inside specimen considerably ...

Abstract Hastelloy C-276 is a nickel-based alloy with high strength and corrosion resistance at cryogenic to temperatures. The issue of shallow penetration by Tungsten Inert Gas (TIG) welding was addressed in the current investigation applying A-TIG variable oxide flux. In investigation, constant conditions were used perform TIG using SiO 2 , TiO 50% mixture + weld bead width depth profile meas...

In polycrystalline metals, local deformation heterogeneities induced by the microstructure influence fatigue crack initiation and micro-crack propagation. The localization in plastic strains associated with heterogeneous deformation has been described as a necessary condition and a precursor for the nucleation of fatigue cracks. However, a clear and quantitative assessment of the correlation be...