Corrosion rates of austenitic stainless steel clad metals containing different ferrite contents were found in 5 N H2SO4 + 0.5 N NaCl. The suitability of the solution to room-temperature stress corrosion cracking of samples in the as-weld and post-weld heat-treated conditions (600, 800, and 1000°C for 1, 10, and 100 hours) was examined.
The results showed that presence of ferrite or sigma in the samples increase their corrosion rates in the above solution. Post-weld heat treatment at 1000°C decreased corrosion rates of the samples. The solution was found suitable for SCC testing of weld metals.
National Association of Corrosion Engineers
1990
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