TY - JOUR
T1 - Investigation of surface treatment effects on the environmentally-assisted cracking behaviour of Alloy 182 in boiling water reactor environment
AU - Que, Zaiqing
AU - Zajec, Bojan
AU - Ritter, Stefan
AU - Seppänen, Tommi
AU - Saario, Timo
AU - Toivonen, Aki
AU - Treichel, Aleksandra
AU - Lautaru, Valentin
AU - Scenini, Fabio
N1 - Publisher Copyright:
© 2022 The Author(s). Published by Informa UK Limited, trading as Taylor & Francis Group.
PY - 2022
Y1 - 2022
N2 - Surface treatments of primary circuit components in light water reactors are regarded as possible ways to mitigate environmentally-assisted cracking (EAC). To date, it is not fully conclusive which surface condition is suitable to reduce the EAC initiation susceptibility. Constant extension rate tensile (CERT) tests were performed by several labs using flat tapered tensile specimens with different surface conditions (ground, industrial face milled, advanced face milled and shot peened), exposed to a boiling water reactor normal water chemistry environment at 288°C. Despite some scatter in the results, the CERT tests revealed that the EAC initiation susceptibility seems lowest for the advanced face milled surface and highest for the shot peened surface. However, it must be emphasised that the differences were moderate and that the surprising behaviour of the shot peened surface can be explained. The mechanical grinding of the surface did not significantly retard EAC initiation compared to industrial face milling.
AB - Surface treatments of primary circuit components in light water reactors are regarded as possible ways to mitigate environmentally-assisted cracking (EAC). To date, it is not fully conclusive which surface condition is suitable to reduce the EAC initiation susceptibility. Constant extension rate tensile (CERT) tests were performed by several labs using flat tapered tensile specimens with different surface conditions (ground, industrial face milled, advanced face milled and shot peened), exposed to a boiling water reactor normal water chemistry environment at 288°C. Despite some scatter in the results, the CERT tests revealed that the EAC initiation susceptibility seems lowest for the advanced face milled surface and highest for the shot peened surface. However, it must be emphasised that the differences were moderate and that the surprising behaviour of the shot peened surface can be explained. The mechanical grinding of the surface did not significantly retard EAC initiation compared to industrial face milling.
KW - Alloy 182
KW - boiling water reactor
KW - Crack initiation
KW - environmentally-assisted cracking
KW - surface machining
UR - http://www.scopus.com/inward/record.url?scp=85131694036&partnerID=8YFLogxK
U2 - 10.1080/1478422X.2022.2083746
DO - 10.1080/1478422X.2022.2083746
M3 - Article
AN - SCOPUS:85131694036
SN - 1478-422X
VL - 57
SP - 474
EP - 485
JO - Corrosion Engineering Science and Technology
JF - Corrosion Engineering Science and Technology
IS - 5
ER -