Research on the Corrosion Fatigue Property of 2524-T3 Aluminum Alloy

The 2524-T3 aluminum alloy was subjected to fatigue tests under the conditions of <i>R</i> = 0, 3.5% NaCl corrosion solution, and the loading cycles of 10<sup>6</sup>, and the S-N curve was obtained. The horizontal fatigue limit was 169 MPa, which is slightly higher than the...

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Auteurs principaux:	Chi Liu, Liyong Ma, Ziyong Zhang, Zhuo Fu, Lijuan Liu
Format:	article
Langue:	EN
Publié:	MDPI AG 2021
Sujets:	2524-T3 aluminum alloy fatigue corrosion crack propagation fracture Mining engineering. Metallurgy TN1-997
Accès en ligne:	https://doaj.org/article/662c9acfcb954014b61b2238b42d5d9c
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spelling	oai:doaj.org-article:662c9acfcb954014b61b2238b42d5d9c2021-11-25T18:21:42ZResearch on the Corrosion Fatigue Property of 2524-T3 Aluminum Alloy10.3390/met111117542075-4701https://doaj.org/article/662c9acfcb954014b61b2238b42d5d9c2021-11-01T00:00:00Zhttps://www.mdpi.com/2075-4701/11/11/1754https://doaj.org/toc/2075-4701The 2524-T3 aluminum alloy was subjected to fatigue tests under the conditions of <i>R</i> = 0, 3.5% NaCl corrosion solution, and the loading cycles of 10<sup>6</sup>, and the S-N curve was obtained. The horizontal fatigue limit was 169 MPa, which is slightly higher than the longitudinal fatigue limit of 163 MPa. In addition, detailed microstructural analysis of the micro-morphological fatigue failure features was carried out. The influence mechanism of corrosion on the fatigue crack propagation of 2524-T3 aluminum alloy was discussed. The fatigue source characterized by cleavage and fracture mainly comes from corrosion pits, whose expansion direction is perpendicular to the principal stress direction. The stable propagation zone is characterized by strip fractures. The main feature of the fracture in the fracture zone is equiaxed dimples. The larger dimples are mixed with second-phase particles ranging in size from 1 to 5 μm. There is almost a one-to-one correspondence between the dimples and the second-phase particles. The fracture mechanism of 2524 alloy at this stage is transformed into a micro-holes connection mechanism, and the nucleation of micropores is mainly derived from the second-phase particles.Chi LiuLiyong MaZiyong ZhangZhuo FuLijuan LiuMDPI AGarticle2524-T3 aluminum alloyfatiguecorrosioncrack propagationfractureMining engineering. MetallurgyTN1-997ENMetals, Vol 11, Iss 1754, p 1754 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	2524-T3 aluminum alloy fatigue corrosion crack propagation fracture Mining engineering. Metallurgy TN1-997
spellingShingle	2524-T3 aluminum alloy fatigue corrosion crack propagation fracture Mining engineering. Metallurgy TN1-997 Chi Liu Liyong Ma Ziyong Zhang Zhuo Fu Lijuan Liu Research on the Corrosion Fatigue Property of 2524-T3 Aluminum Alloy
description	The 2524-T3 aluminum alloy was subjected to fatigue tests under the conditions of <i>R</i> = 0, 3.5% NaCl corrosion solution, and the loading cycles of 10<sup>6</sup>, and the S-N curve was obtained. The horizontal fatigue limit was 169 MPa, which is slightly higher than the longitudinal fatigue limit of 163 MPa. In addition, detailed microstructural analysis of the micro-morphological fatigue failure features was carried out. The influence mechanism of corrosion on the fatigue crack propagation of 2524-T3 aluminum alloy was discussed. The fatigue source characterized by cleavage and fracture mainly comes from corrosion pits, whose expansion direction is perpendicular to the principal stress direction. The stable propagation zone is characterized by strip fractures. The main feature of the fracture in the fracture zone is equiaxed dimples. The larger dimples are mixed with second-phase particles ranging in size from 1 to 5 μm. There is almost a one-to-one correspondence between the dimples and the second-phase particles. The fracture mechanism of 2524 alloy at this stage is transformed into a micro-holes connection mechanism, and the nucleation of micropores is mainly derived from the second-phase particles.
format	article
author	Chi Liu Liyong Ma Ziyong Zhang Zhuo Fu Lijuan Liu
author_facet	Chi Liu Liyong Ma Ziyong Zhang Zhuo Fu Lijuan Liu
author_sort	Chi Liu
title	Research on the Corrosion Fatigue Property of 2524-T3 Aluminum Alloy
title_short	Research on the Corrosion Fatigue Property of 2524-T3 Aluminum Alloy
title_full	Research on the Corrosion Fatigue Property of 2524-T3 Aluminum Alloy
title_fullStr	Research on the Corrosion Fatigue Property of 2524-T3 Aluminum Alloy
title_full_unstemmed	Research on the Corrosion Fatigue Property of 2524-T3 Aluminum Alloy
title_sort	research on the corrosion fatigue property of 2524-t3 aluminum alloy
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/662c9acfcb954014b61b2238b42d5d9c
work_keys_str_mv	AT chiliu researchonthecorrosionfatiguepropertyof2524t3aluminumalloy AT liyongma researchonthecorrosionfatiguepropertyof2524t3aluminumalloy AT ziyongzhang researchonthecorrosionfatiguepropertyof2524t3aluminumalloy AT zhuofu researchonthecorrosionfatiguepropertyof2524t3aluminumalloy AT lijuanliu researchonthecorrosionfatiguepropertyof2524t3aluminumalloy
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Research on the Corrosion Fatigue Property of 2524-T3 Aluminum Alloy

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