On the kinetics of martensite formation in a duplex stainless steel

Abstract

Studies have been made of the kinetics of martensite transformation in a duplex stainless steel of composition 21Cr-6.6Ni, 2.5M₀, 1.6Cu, <.0.03C (wt.%) Solution treatment at 1050^οC for 1 hr was followed by deformation at the subzero temperatures of –70 and –196^οC. The kinetics of the γ → α¹ transformation in the duplex stainless steel is confirmed to be sigmoidal in nature by the results obtained. Nearly constant rate of transformation occurs up to 50% reduction, then a stimulating effect thereafter. Saturation of the transformation would occur in reduction range of 50-80%.



Journal of the Nigerian Association of Mathematical Physics Vol. 8 2004: pp. 323-326