The use of thermomagnetic analysis for detection and quantification of 475°C embrittlement of duplex stainless steels

Abstract A duplex stainless steel was aged at 475°C for different times up to 500 h. The thermal embrittlement was investigated by thermomagnetic analysis using a vibrating sample magnetometer and a thermomagnetic balance. The results obtained with the two equipment were similar and show that the Curie temperature increases with the ageing time. Relationships between T c and mechanical properties (hardness and toughness) were proposed.