Determination of phases and residual stresses after martensitic transformation induced by rolling in 304L stainless steel

Résumé

The 304L austenitic stainless steel is susceptible to deformation induced martensitic transformation. This
phase transformation depends on the temperature as well as on the mode, rate and level of deformation. In
this work the phases and residual stresses of a 304L TRIP steel where martensitic transformation was induced
by cold rolling were investigated by X-ray diffraction XRD. The analyses were performed for different
sample thicknesses. The results showed that the phase composition and the residual stresses are strongly
dependent on sample thickness. All samples showed a compressive residual stress.
Keywords: 304L Stainless Steel, Martensitic Transformation, Residual Stress, Thickness variation.