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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Autores principales: Chi Liu, Liyong Ma, Ziyong Zhang, Zhuo Fu, Lijuan Liu
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Publicado: MDPI AG 2021
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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
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