Abstract
In this study, nanostructured WC-12Co powder was produced by ball milling and then agglomerating by spray drying. The produced nanostructured WC-12Co powder was used for laser cladding of AISI 321 stainless steel substrate. In order to evaluate the effect of argon shroud protection, the cladding process was performed with and without argon shroud protection. Microstructural and phase characterization showed that argon shroud protection can reduce the WC decarburization and the relative fraction of WC phase in clads reached up to 74%. In addition, microhardness and porosity percentage of the clads with argon shroud protection showed a significant improvement in comparison with the clads without argon shroud protection. The microhardness (to 2200 HV) and wear resistance increased and the porosity percentage decreased to less than 1%.
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Habibi, A.H., Shoja Razavi, R., Borhani, G.H. et al. Effect of Argon Shroud Protection on the Laser Cladding of Nanostructured WC-12Co Powder. J. of Materi Eng and Perform 30, 3313–3320 (2021). https://doi.org/10.1007/s11665-021-05675-7
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DOI: https://doi.org/10.1007/s11665-021-05675-7