Prediction of Intergranular Corrosion Sensitivity for SUS 304 Steel Having both Inter- and Intragranular Corrosion

Abstract

This paper deals with the method to separate the degree of sensitization at the grain boundaries from the sensitized specimen that has both inter- and intragranular corrosion. The specimens used in this experiment were type 304 stainless steel plates having 0, 5, 15 and 30% plastic strain. Isothermal heat treatments were used for the sensitizing heat treatments. The degree of sensitization was obtained from the EPR test. The degree of sensitization at the grain boundaries separated from the specimen that has both inter- and intragranular corrosion was the same value with the specimen having the same degree of sensitization caused only by intergranular corrosion without intragranular corrosion.