加载速率对 304L 不锈钢氯化物应力腐蚀开裂的影响

IF 2.7 4区材料科学 Q3 ELECTROCHEMISTRY

Corrosion Reviews Pub Date : 2024-07-16 DOI:10.1515/corrrev-2024-0051

Sarah M. Blust, James T. Burns

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引用次数: 0

摘要

在 23 °C 至 70 °C 的不同温度下，评估了应用加载速率（dK/dt）对浸入 4.7 M MgCl2 溶液中的退火 304L 不锈钢应力腐蚀开裂（SCC）行为的影响。将在 K 值升高加载（dK/dt > 0）条件下测得的裂纹生长率与静态 K 值测试中测得的裂纹生长率进行了比较。结果发现，基于 K 值上升的加载方案在所有温度下都能产生更保守的裂纹生长率，裂纹生长率的变化（以及加载速率的依赖性）随着环境严重程度的增加而减小。

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The impact of loading rate on chloride induced stress corrosion cracking of 304L stainless steel

The influence of applied loading rate (dK/dt) on stress corrosion cracking (SCC) behavior in annealed 304L stainless steel immersed in 4.7 M MgCl2 solution was assessed at varying temperatures from 23 °C to 70 °C. Measured crack growth rates obtained under rising K loading (dK/dt > 0) are compared to those obtained during static K testing. A rising K-based loading protocol was found to yield more conservative crack growth rates across all temperatures, with the variation in crack growth rates (and therefore the dependence in loading rate) decreasing with increasing environmental severity.

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来源期刊

Corrosion Reviews 工程技术-材料科学：膜

CiteScore

5.20

自引率

3.10%

发文量

审稿时长

4.5 months

期刊介绍： Corrosion Reviews is an international bimonthly journal devoted to critical reviews and, to a lesser extent, outstanding original articles that are key to advancing the understanding and application of corrosion science and engineering in the service of society. Papers may be of a theoretical, experimental or practical nature, provided that they make a significant contribution to knowledge in the field.