MAGNETIC EVALUATION OF MACHINING INDUCED DEFORMATION TRANSFORMATION IN AUSTENTIC STAINLESS-STEELS

Austenitic stainless steel alloys, particularly those with high Md temperatures are prone to transform to ferromagnetic martensite during deformation. Prior to studying their magnetic properties, therefore, care must be taken to limit sample-preparation-induced damage to the surface layers, and then to remove these by severe etching before making the measurements. A magnetic technique for evaluating deformation-induced transformation is described and some experimental results are discussed. © 1979.