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首页> 外文会议>ASME(American Society of Mechanical Engineers) Pressure Vessels and Piping Conference 2006 vol.1: Codes and Standards >A REVIEW OF FATIGUE SCC CRACK GROWTH RATE RELATIONSHIPS FOR FERRITIC STAINLESS STEELS AND NI-CR-FE MATERIALS IN BWR WATER ENVIRONMENT
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A REVIEW OF FATIGUE SCC CRACK GROWTH RATE RELATIONSHIPS FOR FERRITIC STAINLESS STEELS AND NI-CR-FE MATERIALS IN BWR WATER ENVIRONMENT

机译：BWR水环境中铁素体不锈钢和Ni-CR-FE材料的疲劳和SCC裂纹生长速率关系的综述

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摘要

When in-service inspection of a nuclear plant component reveals the presence of cracking, an engineering evaluation (typically called a justification for continued operation, or JCO) is required to demonstrate the structural suitability for continued operation. A key element in such a flaw evaluation is the projected crack growth over the period when the cracked component will be reinspected. The crack growth is expected to be a combination of stress corrosion cracking (SCC) and corrosion fatigue. The ASME Section Ⅺ Code is in the process of developing a full range of SCC and corrosion fatigue crack growth rate relationships (CGRs) for stainless steel and Ni-Cr-Fe materials. The objective of this paper is to summarize several available SCC and fatigue crack growth rate relationships for these materials exposed to boiling water reactor (BWR) water environments. For completeness, low alloy steel SCC and corrosion fatigue CGRs in BWR water environment are also briefly reviewed. Two example evaluations are provided that used some of these CGRs in developing the JCOs for BWR components. A detailed comparison of these CGRs along with a review of the underlying data will be part of a future effort undertaken by the ASME Section Ⅺ Task Group.
机译：如果在核电站部件的在役检查中发现存在裂纹，则需要进行工程评估（通常称为持续运行的依据），以证明结构适合持续运行。进行此类缺陷评估的关键因素是在重新检查裂纹组件期间预计的裂纹扩展。预计裂纹扩展是应力腐蚀开裂（SCC）和腐蚀疲劳的结合。 ASME SectionⅪCode正在开发针对不锈钢和Ni-Cr-Fe材料的各种SCC和腐蚀疲劳裂纹扩展速率关系（CGR）。本文的目的是总结暴露于沸水反应堆（BWR）水环境中的这些材料的几种可用的SCC和疲劳裂纹扩展速率关系。为了完整起见，还简要回顾了BWR水环境中的低合金钢SCC和腐蚀疲劳CGR。提供了两个示例评估，这些评估在开发用于BWR组件的JCO时使用了其中的一些CGR。这些CGR的详细比较以及对基础数据的审查将是ASMEⅪ任务组今后所做工作的一部分。

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