Laser cladding for railway repair: influence of depositing materials and heat treatment on microstructural characteristics

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dc.contributor.authorLai, Qen_AU
dc.contributor.authorAbrahams, Ren_AU
dc.contributor.authorMutton, PJen_AU
dc.contributor.authorQiu, Cen_AU
dc.contributor.authorParadowska, AMen_AU
dc.contributor.authorSoodi, Men_AU
dc.contributor.authorRoy, Ten_AU
dc.contributor.authorYan, Wen_AU
dc.date.accessioned2021-03-10T22:11:19Zen_AU
dc.date.available2021-03-10T22:11:19Zen_AU
dc.date.issued2017en_AU
dc.date.statistics2021-03-01en_AU
dc.description.abstractThe contact between train wheels and rail tracks is known to induce material degradation in the form of wear, and rolling contact fatigue in the railhead. Laser cladding, a state of the art surface engineering technique, is a promising solution to repair damaged railheads so as to alleviate the rates of degradation and extend the component longevity. In this paper, effects of cladding material and heat treatment on microstructures of laser treated rails is presented. Laser cladding of premium hypereutectoid rail, four different depositing materials, and different heat treatments were investigated. For the preheating length of 400 mm, equal to the cladding length, the formation of martensite in heat affected zone (HAZ) was not hindered by the application of preheating to 350 °C on the rail-longitudinally deposited railhead of the four materials. Consequentially, cracking in the clad and HAZ was expected. An uncracked microstructure with excellent microstructural consistency across the entire rail-longitudinally deposited railhead and its HAZ was established using a heat treatment combination consisting of pre-heating, postheating, and slow cooling, regardless of the depositing materials. © 2018 American Society of Civil Engineersen_AU
dc.identifier.booktitleICRT 2017, Railway Development, Operations, and Maintenanceen_AU
dc.identifier.citationLai. Q., Abrahams, R., Mutton, P., Qiu, C., Paradowska, A., Soodi, M., Roy, T., & Yan, W. (2017). Laser cladding for railway repair: influence of depositing materials and heat treatment on microstructural characteristics. In Zhai, W., & Wang, K. C. P. (eds) ICRT 2017, Railway Development, Operations, and Maintenance. Paper presented at the First International Conference on Rail Transportation, July 10–12, 2017, Chengdu, Sichuan Province, China. Retrieved from https://ascelibrary.org/doi/book/10.1061/9780784481257en_AU
dc.identifier.conferenceenddate12 July 2017en_AU
dc.identifier.conferencenameFirst International Conference on Rail Transportationen_AU
dc.identifier.conferenceplaceChengdu, Sichuan Province, Chinaen_AU
dc.identifier.conferencestartdate10 July 2017en_AU
dc.identifier.editorsZhai, W., & Wang, K. C. P.en_AU
dc.identifier.isbn9780784481257en_AU
dc.identifier.urihttps://ascelibrary.org/doi/book/10.1061/9780784481257en_AU
dc.identifier.urihttps://apo.ansto.gov.au/dspace/handle/10238/10510en_AU
dc.language.isoenen_AU
dc.publisherAmerican Society of Civil Engineers (ASCE)en_AU
dc.subjectLasersen_AU
dc.subjectCladdingen_AU
dc.subjectHeat treatmentsen_AU
dc.subjectHeat affected zoneen_AU
dc.subjectMicrostructureen_AU
dc.subjectRailwaysen_AU
dc.titleLaser cladding for railway repair: influence of depositing materials and heat treatment on microstructural characteristicsen_AU
dc.typeConference Paperen_AU
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