Analysis of the pit geometry influence on the rupture by corrosion-fatigue in Zr55Al10Cu30Ni5 bulk metallic glass exposed to distilled water medium

In a previous work, fatigue experiments performed on Zr55Al10Cu30Ni5 (at.%) bulk metallic glass immersed in distilled water environment have highlighted a causal connection between the generation of corrosion pits and the nucleation of fatigue cracks for the first time in amorphous metallic material...

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Autores principales:	Benjamin GUENNEC, Raiki KABUCHI, Hirotaka KUWAHARA
Formato:	article
Lenguaje:	EN
Publicado:	The Japan Society of Mechanical Engineers 2021
Materias:	bulk metallic glass corrosion fatigue high cycle fatigue pit growth pit-to-crack transition Mechanical engineering and machinery TJ1-1570
Acceso en línea:	https://doaj.org/article/a0688fa19c5a45bb91d2e9752e11e6ea
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spelling	oai:doaj.org-article:a0688fa19c5a45bb91d2e9752e11e6ea2021-11-09T00:01:15ZAnalysis of the pit geometry influence on the rupture by corrosion-fatigue in Zr55Al10Cu30Ni5 bulk metallic glass exposed to distilled water medium2187-974510.1299/mej.21-00202https://doaj.org/article/a0688fa19c5a45bb91d2e9752e11e6ea2021-08-01T00:00:00Zhttps://www.jstage.jst.go.jp/article/mej/8/5/8_21-00202/_pdf/-char/enhttps://doaj.org/toc/2187-9745In a previous work, fatigue experiments performed on Zr55Al10Cu30Ni5 (at.%) bulk metallic glass immersed in distilled water environment have highlighted a causal connection between the generation of corrosion pits and the nucleation of fatigue cracks for the first time in amorphous metallic material. In line with the widely reported results from conventional crystalline materials, additional analyses have suggested an influence of the pit geometry on the occurrence of the fatigue crack nucleation event. Nevertheless, several aspects related to the pit-to-crack transition of the investigated material remain unknown. In the present work, a supplementary investigation based on artificially pitted specimens is undertaken to clarify the effect of the pit aspect ratio on the fatigue behavior of Zr55Al10Cu30Ni5 BMG to assess if the crack nucleation is impacted by the pit geometry. Furthermore, an estimation of the pit geometry effect on the finite fatigue life is also carried out. As an additional involvement, the reason of the slight discrepancy of the fatigue strengths from artificially pitted and smooth specimens is discussed. Experimental results show that the corrosion pit depth governs the fatigue crack nucleation occurrence through the existence of a critical pit geometry, assessed via its aspect ratio in the present work. However, in a noticeable discrepancy with its crystalline counterparts, the influence of the pit geometry on the finite fatigue life of Zr55Al10Cu30Ni5 bulk metallic glass is limited.Benjamin GUENNECRaiki KABUCHIHirotaka KUWAHARAThe Japan Society of Mechanical Engineersarticlebulk metallic glasscorrosion fatiguehigh cycle fatiguepit growthpit-to-crack transitionMechanical engineering and machineryTJ1-1570ENMechanical Engineering Journal, Vol 8, Iss 5, Pp 21-00202-21-00202 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	bulk metallic glass corrosion fatigue high cycle fatigue pit growth pit-to-crack transition Mechanical engineering and machinery TJ1-1570
spellingShingle	bulk metallic glass corrosion fatigue high cycle fatigue pit growth pit-to-crack transition Mechanical engineering and machinery TJ1-1570 Benjamin GUENNEC Raiki KABUCHI Hirotaka KUWAHARA Analysis of the pit geometry influence on the rupture by corrosion-fatigue in Zr55Al10Cu30Ni5 bulk metallic glass exposed to distilled water medium
description	In a previous work, fatigue experiments performed on Zr55Al10Cu30Ni5 (at.%) bulk metallic glass immersed in distilled water environment have highlighted a causal connection between the generation of corrosion pits and the nucleation of fatigue cracks for the first time in amorphous metallic material. In line with the widely reported results from conventional crystalline materials, additional analyses have suggested an influence of the pit geometry on the occurrence of the fatigue crack nucleation event. Nevertheless, several aspects related to the pit-to-crack transition of the investigated material remain unknown. In the present work, a supplementary investigation based on artificially pitted specimens is undertaken to clarify the effect of the pit aspect ratio on the fatigue behavior of Zr55Al10Cu30Ni5 BMG to assess if the crack nucleation is impacted by the pit geometry. Furthermore, an estimation of the pit geometry effect on the finite fatigue life is also carried out. As an additional involvement, the reason of the slight discrepancy of the fatigue strengths from artificially pitted and smooth specimens is discussed. Experimental results show that the corrosion pit depth governs the fatigue crack nucleation occurrence through the existence of a critical pit geometry, assessed via its aspect ratio in the present work. However, in a noticeable discrepancy with its crystalline counterparts, the influence of the pit geometry on the finite fatigue life of Zr55Al10Cu30Ni5 bulk metallic glass is limited.
format	article
author	Benjamin GUENNEC Raiki KABUCHI Hirotaka KUWAHARA
author_facet	Benjamin GUENNEC Raiki KABUCHI Hirotaka KUWAHARA
author_sort	Benjamin GUENNEC
title	Analysis of the pit geometry influence on the rupture by corrosion-fatigue in Zr55Al10Cu30Ni5 bulk metallic glass exposed to distilled water medium
title_short	Analysis of the pit geometry influence on the rupture by corrosion-fatigue in Zr55Al10Cu30Ni5 bulk metallic glass exposed to distilled water medium
title_full	Analysis of the pit geometry influence on the rupture by corrosion-fatigue in Zr55Al10Cu30Ni5 bulk metallic glass exposed to distilled water medium
title_fullStr	Analysis of the pit geometry influence on the rupture by corrosion-fatigue in Zr55Al10Cu30Ni5 bulk metallic glass exposed to distilled water medium
title_full_unstemmed	Analysis of the pit geometry influence on the rupture by corrosion-fatigue in Zr55Al10Cu30Ni5 bulk metallic glass exposed to distilled water medium
title_sort	analysis of the pit geometry influence on the rupture by corrosion-fatigue in zr55al10cu30ni5 bulk metallic glass exposed to distilled water medium
publisher	The Japan Society of Mechanical Engineers
publishDate	2021
url	https://doaj.org/article/a0688fa19c5a45bb91d2e9752e11e6ea
work_keys_str_mv	AT benjaminguennec analysisofthepitgeometryinfluenceontherupturebycorrosionfatigueinzr55al10cu30ni5bulkmetallicglassexposedtodistilledwatermedium AT raikikabuchi analysisofthepitgeometryinfluenceontherupturebycorrosionfatigueinzr55al10cu30ni5bulkmetallicglassexposedtodistilledwatermedium AT hirotakakuwahara analysisofthepitgeometryinfluenceontherupturebycorrosionfatigueinzr55al10cu30ni5bulkmetallicglassexposedtodistilledwatermedium
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Analysis of the pit geometry influence on the rupture by corrosion-fatigue in Zr55Al10Cu30Ni5 bulk metallic glass exposed to distilled water medium

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