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Crack Growth Rate Testing Of Alloy 82 In BWR Environments

Product Number: ED22-17295-SG

Author: Johan Stjärnsäter, Katsuhiko Kumagai

Publication Date: 2022

$20.00

The nickel base weld metal Alloy 82 is used in various applications in boiling water reactors (BWRs). Applications that are vital from a safety point of view are e.g., welds between core shroud support legs and the reactor pressure vessel (RPV), and feedwater nozzle to safe end welds. Laboratory testing and service history have shown that Alloy 82 is susceptible to stress corrosion cracking (SCC) in BWR environments. However, in comparison with Alloy 182, fewer failure cases have been reported, which could be related to the higher Cr content in Alloy 82 (~ 15 vs. ~ 20 %). It is also possible that the higher frequency of SCC in Alloy 182 is related to the wider use of this weld metal, and the larger surface area exposed to reactor water. Given the lower frequency of failures in Alloy 82, the database regarding SCC in BWR environments is much larger for Alloy 182.

Products tagged with 'hwc'

Crack Growth Rate Testing Of Alloy 82 In BWR Environments

Association for Materials Protection and Performance