Metallurgical Characterization of Duplex Steel by Non Destructive Techniques
This paper describes the application of eddy current and ultrasonic velocity technique for the study of cold rolled duplex steel. Samples are cold rolled up to 80 percent and then tested for X-Ray diffractrometeric analysis, hardness testing, ultrasonic longitudinal velocity and for eddy-current testing. It was observed that eddy current impedance and longitudinal velocity is affected due to variation in micro-structure induced by cold working. It is suggested that eddy current and ultrasonic velocity techniques are useful tools for the characterization of duplex steel during cold working operation.
Shaheed Khan, Iftikhar us Salam and Karim Ahmed
S.H. Khan et al., "Metallurgical Characterization of Duplex Steel by Non Destructive Techniques", Key Engineering Materials, Vol. 442, pp. 330-334, 2010