Zairyo-to-Kankyo
Online ISSN : 1881-9664
Print ISSN : 0917-0480
Research Paper
Evaluation of SCC Crack Growth Behavior of Non-Sensitized Stainless Steels in High Temperature Water by SSRT
Manabu KanzakiKiyoko TakedaTakeo Kudo
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2007 Volume 56 Issue 6 Pages 259-264

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Abstract

Slow strain rate test (SSRT) method was applied to evaluate the SCC behavior of non-sensitized stainless steels in high temperature water. Crack growth rate (CGR) was evaluated by investigating the time dependence of the maximum crack depth in SSRT. The effects of materials and test conditions on the CGRs were studied. As the result, the CGR of non-sensitized 18Cr-8Ni stainless steels (SUS316, SUS304, SUS347) was in the range of (3−6)×10−10 m/s. In 316NG (nuclear grade), the CGR showed the highest at 561 K, and increased with the concentration of dissolved oxygen and conductivity. The CGR in SSRT was higher by 10 times than that obtained in the crack extension test using CT specimens.

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© 2007 Japan Society of Corrosion Engineering
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