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The Effect of Salt Loading on Chloride-Induced Stress Corrosion Cracking of 304L Austenitic Stainless Steel Under Atmospheric Conditions

21 Pages Posted: 27 Aug 2019 Publication Status: Accepted

See all articles by G.G. Scatigno

G.G. Scatigno

Imperial College London - Department of Materials; Imperial College London - Centre for Nuclear Engineering; EDF Energy, United Kingdom

P. Dong

Imperial College London - Department of Materials; Imperial College London - Centre for Nuclear Engineering

M.P. Ryan

Imperial College London - Department of Materials; Imperial College London - London Centre for Nanotechnology

M.R. Wenman

Imperial College London - Centre for Nuclear Engineering

Abstract

The effect of salt loading on chloride-induced stress corrosion cracking in 304L was studied at atmospheric pressure. Stress relieved samples were uniaxially pre-strained to 5% and were loaded with nine levels of MgCl2 from 2.3 x 10-4 to 4.2 x 10-2 g.cm-2. Samples were subject to 60 MPa stress, 90°C at 70% relative humidity, for 480 hours. A direct correlation between salt loading and the density of cracking and corrosion was observed between 7.6 x 10-4 and 2.6 x 10-2 g.cm-2 . Crack propagation rates were constant between salt loadings of 7.6 x 10-4 and 3.2 x 10-2 g.cm-2 at 1-2 µm.hr-1.

Keywords: Austenitic stainless steels, Corrosion, Stress-corrosion cracking, Chlorides

Suggested Citation

Scatigno, G.G. and Dong, P. and Ryan, M.P. and Wenman, M.R., The Effect of Salt Loading on Chloride-Induced Stress Corrosion Cracking of 304L Austenitic Stainless Steel Under Atmospheric Conditions. Available at SSRN: https://ssrn.com/abstract=3441481 or http://dx.doi.org/10.2139/ssrn.3441481

G.G. Scatigno (Contact Author)

Imperial College London - Department of Materials

South Kensington
United Kingdom

Imperial College London - Centre for Nuclear Engineering

United Kingdom

EDF Energy, United Kingdom

Barnwood, Gloucestershire
United Kingdom

P. Dong

Imperial College London - Department of Materials

South Kensington
United Kingdom

Imperial College London - Centre for Nuclear Engineering

United Kingdom

M.P. Ryan

Imperial College London - Department of Materials

South Kensington
United Kingdom

Imperial College London - London Centre for Nanotechnology

United Kingdom

M.R. Wenman

Imperial College London - Centre for Nuclear Engineering ( email )

United Kingdom

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