Performance of Laser Deposited Inconel 625 Coating During Heat Treatment and Carbonisation
摘要
Laser cladding system available at the CSIR South Africa was used to laser clad Inconel 625Inconel 625 on 304L SS substrate. The produced clad was studied for effects of heat treatmentHeat treatments and carbonisation on the microstructural and hardness properties. The microstructural changes were summarized as: Laves/Eutectic-rich to primary dendritic to MC carbideMC carbides rich to anisotropic Laves-rich to isotropic grain then finally precipitated and large MC carbidesMC carbides microstructureMicrostructure. The As-built sample had higher hardnessHardness value followed by the water quenched and carbonized samples which had similar hardnessHardness value. Aging and stress relieve conditions softened the sample. The obtained hardnessHardness values support the observed microstructuresMicrostructure.