Influence of Overaging Treatment on Localized Corrosion of Al 6056

Guillaumin V.; Mankowski G.

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Influence of Overaging Treatment on Localized Corrosion of Al 6056

机译：Influence of Overaging Treatment on Localized Corrosion of Al 6056

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The influence of T78 overaging treatment on the corrosion behavior of Al 6056 (UNS A96056) in 1 M sodium chloride (NaCl) solution was investigated. The overaged alloy presented the same localized corrosion mechanisms as Al 6056-T6. However, Al 6056-T78 coarse intermetallic Al-Mg-Si-containing particles were found to be more reactive than those in the Al 6056-T6 alloy and were nucleation sites for pits. Pitting and intergranular corrosion were dependent upon each other; intergranular corrosion nucleated on pit walls. A quantitative study showed that H8 overaging of Al 6056 offered a better resistance to intergranular corrosion compared to T6 peak-aging treatment The overaged alloy will be able to replace the traditional Al 2024 (UNS A92024) because of the efficiency of this overaging treatment

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来源
《Corrosion: The Journal of Science and Engineering》 |2000年第1期|12-23|共12页
作者
Guillaumin V.; Mankowski G.;
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作者单位

Project Leader,Animal Health and Welfare,Cheshire County Council;

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原文格式 PDF
正文语种英语
中图分类金属腐蚀与保护、金属表面处理;
关键词
Al 6056; intergranular corrosion; intermetallics; localized corrosion; overaging; pitting corrosion; sodium chloride; UNS A96056;

Influence of Overaging Treatment on Localized Corrosion of Al 6056

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