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Article: Revealing the fatigue crack initiation mechanism of a TiB2-reinforced steel matrix composite

TitleRevealing the fatigue crack initiation mechanism of a TiB2-reinforced steel matrix composite
Authors
CHEN, RLI, BLi, YLIU, ZLONG, XYI, HWANG, XJIANG, CHuang, M
KeywordsSteel matrix composite
Fatigue crack initiation
Interface strength
Eutectic particle cluster
Issue Date2020
PublisherElsevier Ltd. The Journal's web site is located at http://www.elsevier.com/locate/ijfatigue
Citation
International Journal of Fatigue, 2020, v. 130, p. article no. 105276 How to Cite?
DOI: http://dx.doi.org/10.1016/j.ijfatigue.2019.105276
AbstractThe initiation of fatigue cracks in a TiB2-reinforced high-modulus, low-density steel was revealed by in-situ scanning electron microscopy for the first time. The results show that the superior interfacial strength between the TiB2 particles and the matrix prevents the initiation of micro-cracks at the interfaces. Fatigue micro-cracks are mainly induced by the brittle fracture of small eutectic TiB2 particles, while the coalescence of these micro-cracks plays the major role in the fatigue failure. This failure mechanism is essentially different from the static tensile failure mode in which the large primary TiB2 particles are the main source of fracture failure.
Persistent Identifierhttp://hdl.handle.net/10722/289751
ISSN
0142-1123
2021 Impact Factor: 5.489
2020 SCImago Journal Rankings: 1.669
ISI Accession Number ID
WOS:000491639300027

 

DC FieldValueLanguage
dc.contributor.authorCHEN, R-
dc.contributor.authorLI, B-
dc.contributor.authorLi, Y-
dc.contributor.authorLIU, Z-
dc.contributor.authorLONG, X-
dc.contributor.authorYI, H-
dc.contributor.authorWANG, X-
dc.contributor.authorJIANG, C-
dc.contributor.authorHuang, M-
dc.date.accessioned2020-10-22T08:16:57Z-
dc.date.available2020-10-22T08:16:57Z-
dc.date.issued2020-
dc.identifier.citationInternational Journal of Fatigue, 2020, v. 130, p. article no. 105276-
dc.identifier.issn0142-1123-
dc.identifier.urihttp://hdl.handle.net/10722/289751-
dc.description.abstractThe initiation of fatigue cracks in a TiB2-reinforced high-modulus, low-density steel was revealed by in-situ scanning electron microscopy for the first time. The results show that the superior interfacial strength between the TiB2 particles and the matrix prevents the initiation of micro-cracks at the interfaces. Fatigue micro-cracks are mainly induced by the brittle fracture of small eutectic TiB2 particles, while the coalescence of these micro-cracks plays the major role in the fatigue failure. This failure mechanism is essentially different from the static tensile failure mode in which the large primary TiB2 particles are the main source of fracture failure.-
dc.languageeng-
dc.publisherElsevier Ltd. The Journal's web site is located at http://www.elsevier.com/locate/ijfatigue-
dc.relation.ispartofInternational Journal of Fatigue-
dc.subjectSteel matrix composite-
dc.subjectFatigue crack initiation-
dc.subjectInterface strength-
dc.subjectEutectic particle cluster-
dc.titleRevealing the fatigue crack initiation mechanism of a TiB2-reinforced steel matrix composite-
dc.typeArticle-
dc.identifier.emailLi, Y: yzli2@hku.hk-
dc.identifier.emailHuang, M: mxhuang@hku.hk-
dc.identifier.authorityHuang, M=rp01418-
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1016/j.ijfatigue.2019.105276-
dc.identifier.scopuseid_2-s2.0-85072598851-
dc.identifier.hkuros317277-
dc.identifier.volume130-
dc.identifier.spagearticle no. 105276-
dc.identifier.epagearticle no. 105276-
dc.identifier.isiWOS:000491639300027-
dc.publisher.placeUnited Kingdom-
dc.identifier.issnl0142-1123-

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