Solubility Study of Carbonitrides in Low-Alloy Pipe Steels with Mo and Nb at Heating for Rolling Based on Thermodynamic Calculations
摘要
Abstract
Based on the CALPHAD method, a thermodynamic description of the Fe–Mn–Mo–Nb–Si–Ti–C–N system has been constructed, and the solubility of carbonitrides in austenite has been calculated for API 5L low-alloy low-carbon steels with Mo and Nb. The patterns of influence of alloy composition and temperature on the composition and amount of carbonitride phases, as well as on the concentration of elements in the solid solution have been analyzed.