Thermodynamics of phosphorus grain boundary segregation in 17Cr12Ni austenitic steel

The paper presents results of thermodynamic analysis of phosphorus grain boundary segregation in 17Cr12Ni austenitic steel annealed for 1000 h at 923, 973 and 1073 K. With respect to values of compensation temperature tau(P) = 930 K and segregation enthalpy DeltaH(P)(0) = -14.1 kJ/mol the analyzed interfaces were considered to be special grain boundaries. (C) 2002 Acta Materialia Inc. Published by Elsevier Science Ltd. All rights reserved.