Fatigue behavior of innovative alloys at elevated temperature

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dc.contributor Aalto-yliopisto fi
dc.contributor Aalto University en
dc.contributor.author Berto, F.
dc.contributor.author Gallo, P.
dc.contributor.author Razavi, S.M.J.
dc.contributor.author Ayatollahi, M. R.
dc.date.accessioned 2018-02-09T09:59:36Z
dc.date.available 2018-02-09T09:59:36Z
dc.date.issued 2017
dc.identifier.citation Berto , F , Gallo , P , Razavi , S M J & Ayatollahi , M R 2017 , ' Fatigue behavior of innovative alloys at elevated temperature ' Procedia Structural Integrity , vol 3 , pp. 162-167 . DOI: 10.1016/j.prostr.2017.04.029 en
dc.identifier.issn 2452-3216
dc.identifier.other PURE UUID: 73c13779-1a52-4b26-9a42-f134101ce51e
dc.identifier.other PURE ITEMURL: https://research.aalto.fi/en/publications/fatigue-behavior-of-innovative-alloys-at-elevated-temperature(73c13779-1a52-4b26-9a42-f134101ce51e).html
dc.identifier.other PURE FILEURL: https://research.aalto.fi/files/17304590/Berto_etal_ProStruInt_3_162.pdf
dc.identifier.uri https://aaltodoc.aalto.fi/handle/123456789/29865
dc.description.abstract The present paper summarizes the results from uniaxial-tension stress-controlled fatigue tests performed at different temperatures up to 650 degrees C on Cu-Be and 40CrMoV13.9 specimens. Two geometries are considered: hourglass shaped (both materials), plates weakened by a central hole (Cu-Be alloy). The motivation of the present work is that, at the best of authors' knowledge, only a limited number of works on these alloys under high-temperature fatigue are available in the literature and no results deal with notched components. In the present contribution, after a brief review of the recent papers, material properties and experimental procedure are described. The new data from un-notched and notched specimens are summarized in the corresponding fatigue curves. The Cu-Be specimens fatigue data are re-analysed in terms of the mean value of the Strain Energy Density (SED). The approach, successfully used by the same authors to summarise fatigue data from notched specimens made of different materials tested at room temperature, is extended here for the first time to high-temperature fatigue. In the plates with central holes the SED is evaluated over a finite size control volume surrounding the highly stressed zone at the hole edge. A value of the radius equal to 0.6 mm seems to be appropriate to summarize all fatigue data in a quite narrow scatter-band Thanks to the SED approach it is possible to summarise in a single scatter-band all the fatigue data, independent of the specimen geometry. Copyright (C) 2017 The Authors. Published by Elsevier B.V. en
dc.format.extent 6
dc.format.extent 162-167
dc.format.mimetype application/pdf
dc.language.iso en en
dc.relation.ispartofseries Procedia Structural Integrity en
dc.relation.ispartofseries Volume 3 en
dc.rights openAccess en
dc.subject.other 216 Materials engineering en
dc.subject.other 214 Mechanical engineering en
dc.title Fatigue behavior of innovative alloys at elevated temperature en
dc.type Conference article fi
dc.description.version Peer reviewed en
dc.contributor.department Norwegian University of Science and Technology
dc.contributor.department Department of Mechanical Engineering
dc.contributor.department Iran University of Science and Technology
dc.subject.keyword high-temperature fatigue
dc.subject.keyword copper-cobalt-beryllium alloy
dc.subject.keyword fatigue strength
dc.subject.keyword notched specimens
dc.subject.keyword 40CrMoV
dc.subject.keyword LOW-CYCLE FATIGUE
dc.subject.keyword STRAIN-ENERGY
dc.subject.keyword VOLUME
dc.subject.keyword CREEP
dc.subject.keyword STRENGTH
dc.subject.keyword NOTCHES
dc.subject.keyword COPPER
dc.subject.keyword 216 Materials engineering
dc.subject.keyword 214 Mechanical engineering
dc.identifier.urn URN:NBN:fi:aalto-201802091361
dc.identifier.doi 10.1016/j.prostr.2017.04.029
dc.type.version publishedVersion

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