Induction and Propagation Periods during Stress-Corrosion Cracking of 18&ndash;8 Stainless Steel in Concentrated MgCl<SUB>2</SUB> Solutions

Abstract

The effect of MgCl2 concentration, test temperature, specimen potential and applied stress on the induction and propagation periods of the stress-corrosion cracking of 18-8 stainless steel in MgCl2 solutions has been investigated by measuring the elongation of the specimen throughout the tests. It has been shown that these periods are influenced differently by the separate variables, with the specimen potential having the largest effect. It is thought that crack propagation is initiated by the rise of the corrosion potential caused by film repair.