Laser powder bed fusion (LPBF), a metal additive manufacturing technique, was conducted on feedstock-modified 316L stainless steel (316L) powder produced by ball-milling of commercial 316L and 1 wt% additive (cerium oxide—CeO2, lanthanum (III) nitrate hexahydrate—La(NO3)3·6H2O, and chromium nitride—CrN). The feedstock-modified LPBF-316L specimens were sensitized at 675°C for 24 h, and the influence of additives on intergranular corrosion (IGC) was investigated following ASTM G108-94 and A262-14 standards. The LPBF-316L with La(NO3)3·6H2O showed higher IGC resistance. The microstructure of the LPBF specimen was investigated and correlated to understand the improved IGC resistance of LPBF-316L with La(NO3)3·6H2O additive.
Intergranular Corrosion of Feedstock Modified—Additively Manufactured Stainless Steel After Sensitization
Venkata Bhuvaneswari Vukkum, Evan Delvecchio, Jijo Christudasjustus, Steven Storck, Rajeev Kumar Gupta; Intergranular Corrosion of Feedstock Modified—Additively Manufactured Stainless Steel After Sensitization. CORROSION 1 June 2023; 79 (6): 624–636. doi: https://doi.org/10.5006/4245
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