from the conferences organized by TANGER Ltd.
The effect of High Temperature Thermomechanical Processing (HTMP) using hot rolling on the structure, mechanical properties of nitrogen bearing niobium alloyed 18Cr-10Ni austenitic stainless steel is presented. It has been found that the strengthening effect of HTMP depends significantly on the kinetics of deformation accumulation schedule. The change in rolling pressure with an increasing number of passes follow a similar pattern to the change in strength of the TMP treated rolling section. The basic factor determining the difference in structure formation of studying steels is thermodynamic stability of the carbide phase under the varying rolling accumulation schedules. TEM and light microscopy have been used in structural investigations. HTMP with a different accumulation schedule result in increasing of yield strength by 1.5 times compared to conventional heat treatment value.
Keywords: High Temperature Thermomechanical Processing (HTMP), Nb-alloyed austenitic stainless steel, dislocations, TEM, fragmentation, mechanical properties© This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.