The effect of salt loading on chloride-induced stress corrosion cracking of 304L austenitic stainless steel under atmospheric conditions

Abstract

The effect of salt loading on chloride-induced stress corrosion cracking in 304 L was studied at atmospheric pressure. Stress relieved samples were uniaxially pre-strained to 5% and were loaded with nine levels of MgCl2, investigating Cl− deposition levels from 1.7×10−4 to 3.1×10−2g.cm−2. Samples were subject to 60 MPa stress, 90 °C at 70% relative humidity, for 480 h. A direct correlation between chloride deposition and the density of cracking and corrosion was observed between 5.7×10−4 and 1.96×10−2 g.cm−2. Crack propagation rates were constant between salt loadings of 5.7×10−4 and 2.4×10−2 g.cm−2 at 1–2 µm.h−1.

Publication
Materialia
Mark Wenman
Mark Wenman
Senior Lecturer in the Department of Materials

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