Abstract
The intergranular stress corrosion cracking (IGSCC) susceptibility of surface finished type 304 and 304L stainless steels has been studied using a constant load tensile specimen in 288 °C water containing 26 ppm dissolved oxygen. The study was to define conditions to prevent IGSCC in piping used in a boiling water reactor (BWR). The results are as follows:
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1)
IGSCC susceptibility of type 304 stainless steel increased markedly by surface finishing, such as grinding, when in a sensitized condition; increasing surface roughness shortened the time to failure.
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2)
Type 304 stainless steel specimens, which are solution heat treated, do not show IGSCC susceptibility even if they are ground.
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3)
Type 304L stainless steels do not show IGSCC susceptibility even if they are ground and sensitized at 621 °C for 2 h.
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Kuniya, J., Masaoka, I., Sasaki, R. et al. Effects of surface finishing on stress corrosion cracking of austenitic stainless steels in high temperature water. JMES 1, 30–41 (1980). https://doi.org/10.1007/BF02833359
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DOI: https://doi.org/10.1007/BF02833359