Desensitization of type 316 stainless steel by laser surface melting

Abstract

Laser surface melting (LSM) on sensitized austenitic stainless steel of cold‐work 25 per cent was carried out by using a continuous wave CO₂ laser of power 5kW and traverse speed 20mm/sec of the beam. The stainless steel was sensitized at 898K for 10, 20 and 50hr durations. ASTM A262 Practice A test was used to examine the microstructures of the specimens before and after LSM while single loop electrochemical potentiokinetic reactivation (SL‐EPR) technique was used to quantify the degree of sensitization (DOS). A trend is noted between the cold‐work of stainless steel and the degree of desensitization by LSM.

Citation

Kumar, S. and Banerjee, M.K. (2000), "Desensitization of type 316 stainless steel by laser surface melting", Anti-Corrosion Methods and Materials, Vol. 47 No. 1, pp. 20-25. https://doi.org/10.1108/00035590010309979