On the formation of stress corrosion crack colonies with different crack population

Wang Shidong; Lamborn Lyndon; Chevil Karina; Gamboa Erwin; Chen Weixing

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On the formation of stress corrosion crack colonies with different crack population

机译：关于不同裂缝群的应力腐蚀裂缝菌落的形成

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The aim of this research was to understand why the cracks in a stress corrosion cracking (SCC) colony developed in the pipeline steels exposed to near-neutral pH environments, can be either very dense or sparse, a key puzzling feature of SCC cracks found in the field. Results showed that crack population in a crack colony was increased with increasing the area of mill scale coverage and the length of time the damaged mill scale can be maintained on the steel surface. Various mechanical, chemical and physical conditions that can preserve or remove the mill scale from surface have been studied.

机译：本研究的目的是了解为什么在暴露于近中立的pH环境的管道钢中发育压力腐蚀裂纹（SCC）菌落的裂缝可以是非常致密或稀疏的，可以是SCC裂缝的关键令人困惑的特征场。结果表明，随着轧机规模覆盖范围的增加，损坏的研磨尺度可以保持在钢结构上的裂缝群中的裂缝群增加。研究了可以保护或去除从表面上保护或去除轧机秤的各种机械，化学和物理条件。

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来源
《Corrosion science》 |2020年第5期|108592.1-108592.14|共14页
作者
Wang Shidong; Lamborn Lyndon; Chevil Karina; Gamboa Erwin; Chen Weixing;
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作者单位

Univ Alberta Dept Chem & Mat Engn Edmonton AB T6G 2G6 Canada;

Enbridge Pipelines Inc Edmonton AB T5J 3N7 Canada;

TC Energy Corp Calgary AB T2P 5H1 Canada;

TC Energy Corp Calgary AB T2P 5H1 Canada;

Univ Alberta Dept Chem & Mat Engn Edmonton AB T6G 2G6 Canada;

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原文格式 PDF
正文语种 eng
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关键词
Steel; SEM; Corrosion fatigue; Paint coatings; Rust;

机译：钢;SEM;腐蚀疲劳;涂料涂料;生锈;

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On the formation of stress corrosion crack colonies with different crack population

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