Effect of cold working on the deformation induced martensite and degree of sensitization of austenitic stainless steel

Stainless steel possesses good mechanical properties combined with a high corrosion resistant. The cold rolled stainless steel leads high dislocation densities, enhanced residual stress and strain and produced metastable martensite phase. This means as increased thickness of cold rolled samples with increasing the above factors. The deformation induced martensite and degree of sensitization behavior of austenitic stainless steel (AISI 304) is greatly influenced by several metallurgical factors, such as the chemical composition, the degree of prior deformation, grain size, and the aging temperature and time. The percentage deformation induced martensite behavior of the austenitic stainless steel (AISI 304) has been investigated after aging at various temperatures from 500°C to 700°C for 1 to 30 hours and also evaluate the degree of sensitization behavior on the cold rolled reduction in thickness from 0% to 60% at 500°C for 30 hours of austenitic stainless steel (AISI 304). This paper investigates the co-relation between deformation-induced martensite and degree of sensitization.