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Proposed Crack Growth Rate Disposition Curves For Stress Corrosion Cracking Of Alloy 82 In BWR Environments

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A database of SCC growth rates in commercial austenitic stainless steels exposed to pressurized water reactor (PWR) primary water environments was developed and analyzed from international data in high temperature water, with an emphasis on deaerated or hydrogenated water while also including water containing oxygen. Crack growth rate (CGR) disposition equations were derived to reflect the effects of stress intensity factor (K), temperature, Vickers hardness (HV, to represent retained deformation), with enhancement factors for oxygen-containing, high corrosion potential conditions. The tolerance to chloride and sulfate impurities in PWR primary water was also evaluated.

Product Number: ED22-18350-SG
Author: P.L. Andresen, D.J. Shim, T. Terachi, T. Yamada, Y. Nomura
Publication Date: 2022
$20.00
$20.00
$20.00

A database of 924 stress corrosion cracking (SCC) growth rate observations each with 34 characteristics was created and evaluated to establish crack growth rate (CGR) disposition curves for stainless steel in PWR water environment. The primary parameters in the disposition equation are K, hardness, and temperature, with offsets when dissolved oxygen is present. 265 data were considered mainstream PWR
data, with the other data set aside due to data quality, corrosion potential, water purity, etc. 33 SCC data were obtained in the weld HAZ. About half of the data had all of the details of crack length vs. time, fractography, post-test correction factors, and other parameters used in other large efforts, such as for IASCC and Alloy 690 and its weld metals.


A database of 924 stress corrosion cracking (SCC) growth rate observations each with 34 characteristics was created and evaluated to establish crack growth rate (CGR) disposition curves for stainless steel in PWR water environment. The primary parameters in the disposition equation are K, hardness, and temperature, with offsets when dissolved oxygen is present. 265 data were considered mainstream PWR
data, with the other data set aside due to data quality, corrosion potential, water purity, etc. 33 SCC data were obtained in the weld HAZ. About half of the data had all of the details of crack length vs. time, fractography, post-test correction factors, and other parameters used in other large efforts, such as for IASCC and Alloy 690 and its weld metals.


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