Gf. Li et al., Effect of post weld heat treatment on stress corrosion cracking of a low alloy steel to stainless steel transition weld, CORROS SCI, 43(10), 2001, pp. 1963-1983
The susceptibility to stress corrosion cracking (SCC) of a low alloy to sta
inless steel transition weld, A508-309L/308L, in simulated pressurised wate
r reactor (PWR) primary water, contaminated with low levels of sulphate, at
292 degreesC was assessed via slow strain rate tests under controlled pote
ntials and static load tests at free corrosion potentials. The minimum pote
ntial for SCC, E-c, and crack growth rate were used to evaluate the suscept
ibility of as-welded and post-weld heat treated material. U-bend specimens
tested at open circuit potential showed no SCC. The results indicate that i
f exposed, the transition weld should be immune to SCC in PWR primary side
coolant water. (C) 2001 Elsevier Science Ltd. All rights reserved.