Cargando…
Effects of Ultrasonic Surface Rolling on the Localized Corrosion Behavior of 7B50-T7751 Aluminum Alloy
The effects of an ultrasonic surface rolling process (USRP) on the localized corrosion behavior of 7B50-T7751 aluminum alloy in a sodium chloride + hydrogen peroxide solution were investigated through microstructural observation, immersion testing, and electrochemical measurements. The results revea...
Autores principales: | , , , , , |
---|---|
Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2020
|
Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7040892/ https://www.ncbi.nlm.nih.gov/pubmed/32041204 http://dx.doi.org/10.3390/ma13030738 |
_version_ | 1783501084445114368 |
---|---|
author | Xu, Xingchen Liu, Daoxin Zhang, Xiaohua Liu, Chengsong Liu, Dan Ma, Amin |
author_facet | Xu, Xingchen Liu, Daoxin Zhang, Xiaohua Liu, Chengsong Liu, Dan Ma, Amin |
author_sort | Xu, Xingchen |
collection | PubMed |
description | The effects of an ultrasonic surface rolling process (USRP) on the localized corrosion behavior of 7B50-T7751 aluminum alloy in a sodium chloride + hydrogen peroxide solution were investigated through microstructural observation, immersion testing, and electrochemical measurements. The results revealed that this alloy is prone to pitting. However, the localized corrosion resistance can be significantly improved via both one-pass USRP and 12-pass USRP treatment. Furthermore, in the test solution, the thickness and the acceptor density of the passivation film were affected by the USRP treatment. The improved corrosion resistance of one-pass USRP-treated samples resulted mainly from the introduced compressive residual stress. However, this stress played a secondary role in the considerable enhancement observed for the corrosion resistance of the 12-pass USRP-treated samples. This enhancement is attributed primarily to the nanocrystalline surface and homogeneous surface microstructure induced by the multiple-pass USRP treatment. |
format | Online Article Text |
id | pubmed-7040892 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2020 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-70408922020-03-09 Effects of Ultrasonic Surface Rolling on the Localized Corrosion Behavior of 7B50-T7751 Aluminum Alloy Xu, Xingchen Liu, Daoxin Zhang, Xiaohua Liu, Chengsong Liu, Dan Ma, Amin Materials (Basel) Article The effects of an ultrasonic surface rolling process (USRP) on the localized corrosion behavior of 7B50-T7751 aluminum alloy in a sodium chloride + hydrogen peroxide solution were investigated through microstructural observation, immersion testing, and electrochemical measurements. The results revealed that this alloy is prone to pitting. However, the localized corrosion resistance can be significantly improved via both one-pass USRP and 12-pass USRP treatment. Furthermore, in the test solution, the thickness and the acceptor density of the passivation film were affected by the USRP treatment. The improved corrosion resistance of one-pass USRP-treated samples resulted mainly from the introduced compressive residual stress. However, this stress played a secondary role in the considerable enhancement observed for the corrosion resistance of the 12-pass USRP-treated samples. This enhancement is attributed primarily to the nanocrystalline surface and homogeneous surface microstructure induced by the multiple-pass USRP treatment. MDPI 2020-02-06 /pmc/articles/PMC7040892/ /pubmed/32041204 http://dx.doi.org/10.3390/ma13030738 Text en © 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Xu, Xingchen Liu, Daoxin Zhang, Xiaohua Liu, Chengsong Liu, Dan Ma, Amin Effects of Ultrasonic Surface Rolling on the Localized Corrosion Behavior of 7B50-T7751 Aluminum Alloy |
title | Effects of Ultrasonic Surface Rolling on the Localized Corrosion Behavior of 7B50-T7751 Aluminum Alloy |
title_full | Effects of Ultrasonic Surface Rolling on the Localized Corrosion Behavior of 7B50-T7751 Aluminum Alloy |
title_fullStr | Effects of Ultrasonic Surface Rolling on the Localized Corrosion Behavior of 7B50-T7751 Aluminum Alloy |
title_full_unstemmed | Effects of Ultrasonic Surface Rolling on the Localized Corrosion Behavior of 7B50-T7751 Aluminum Alloy |
title_short | Effects of Ultrasonic Surface Rolling on the Localized Corrosion Behavior of 7B50-T7751 Aluminum Alloy |
title_sort | effects of ultrasonic surface rolling on the localized corrosion behavior of 7b50-t7751 aluminum alloy |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7040892/ https://www.ncbi.nlm.nih.gov/pubmed/32041204 http://dx.doi.org/10.3390/ma13030738 |
work_keys_str_mv | AT xuxingchen effectsofultrasonicsurfacerollingonthelocalizedcorrosionbehaviorof7b50t7751aluminumalloy AT liudaoxin effectsofultrasonicsurfacerollingonthelocalizedcorrosionbehaviorof7b50t7751aluminumalloy AT zhangxiaohua effectsofultrasonicsurfacerollingonthelocalizedcorrosionbehaviorof7b50t7751aluminumalloy AT liuchengsong effectsofultrasonicsurfacerollingonthelocalizedcorrosionbehaviorof7b50t7751aluminumalloy AT liudan effectsofultrasonicsurfacerollingonthelocalizedcorrosionbehaviorof7b50t7751aluminumalloy AT maamin effectsofultrasonicsurfacerollingonthelocalizedcorrosionbehaviorof7b50t7751aluminumalloy |