Investigation of surface treatment effects on the environmentally-assisted cracking behaviour of Alloy 182 in boiling water reactor environment

IF 1.5 4区材料科学 Q4 MATERIALS SCIENCE, MULTIDISCIPLINARY

Corrosion Engineering, Science and Technology Pub Date : 2022-07-04 DOI:10.1080/1478422X.2022.2083746

Z. Que, B. Zajec, S. Ritter, T. Seppänen, T. Saario, A. Toivonen, A. Treichel, Valentin Lautaru, F. Scenini

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引用次数: 2

Abstract

ABSTRACT Surface treatments of primary circuit components in light water reactors are regarded as possible ways to mitigate environmentally-assisted cracking (EAC). To date, it is not fully conclusive which surface condition is suitable to reduce the EAC initiation susceptibility. Constant extension rate tensile (CERT) tests were performed by several labs using flat tapered tensile specimens with different surface conditions (ground, industrial face milled, advanced face milled and shot peened), exposed to a boiling water reactor normal water chemistry environment at 288°C. Despite some scatter in the results, the CERT tests revealed that the EAC initiation susceptibility seems lowest for the advanced face milled surface and highest for the shot peened surface. However, it must be emphasised that the differences were moderate and that the surprising behaviour of the shot peened surface can be explained. The mechanical grinding of the surface did not significantly retard EAC initiation compared to industrial face milling.

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表面处理对182合金在沸水堆环境中环境辅助开裂行为的影响研究

轻水堆一回路元件的表面处理被认为是减轻环境辅助裂化（EAC）的可能方法。到目前为止，还不能完全确定哪种表面条件适合降低EAC引发易感性。恒定拉伸速率拉伸（CERT）试验由几个实验室使用具有不同表面条件（研磨、工业面铣、高级面铣和喷丸）的扁平锥形拉伸试样进行，暴露于288°C的沸水反应堆正常水化学环境中。尽管结果有些分散，但CERT测试显示，先进的端面铣削表面的EAC引发敏感性似乎最低，喷丸表面的则最高。然而，必须强调的是，差异是适度的，喷丸表面的惊人行为可以解释。与工业面铣相比，表面的机械研磨并没有显著延迟EAC的起始。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Corrosion Engineering, Science and Technology 工程技术-材料科学：综合

CiteScore

3.20

自引率

5.60%

发文量

审稿时长

3.4 months

期刊介绍： Corrosion Engineering, Science and Technology provides broad international coverage of research and practice in corrosion processes and corrosion control. Peer-reviewed contributions address all aspects of corrosion engineering and corrosion science; there is strong emphasis on effective design and materials selection to combat corrosion and the journal carries failure case studies to further knowledge in these areas.