Effect of heat input on HAZ softening in fiber laser welding of 22MnB5 steel

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dc.contributor.authorTuncel, Oguz
dc.contributor.authorAydin, Hakan
dc.contributor.authorDavut, Kemal
dc.date.accessioned2024-12-24T19:27:31Z
dc.date.available2024-12-24T19:27:31Z
dc.date.issued2023
dc.departmentSiirt Üniversitesi
dc.description.abstractThis study investigates the effects of heat input on the heat-affected zone (HAZ) softening in fiber laser welding of quenched 1.1 mm thick 22MnB5 steel. Laser power (1500-2500 W) and welding speed (40-120 mm/s) parameters are considered as the input process variables. Depending on the input parameters, the applied heat input varied between 12.5 and 62.5 J/mm. The results indicate that a minimum heat input of 50 J/mm is required for full weld penetration. Microhardness findings revealed that the drop in hardness in the HAZ region relative to the base material (BM) reached 39% due to grain coarsening caused by an increase in heat input under the welding conditions. Grain coarsening (prior austenite grains) is also detected in SEM analysis. In addition, grain coarsening at high heat input was also determined quantitatively in EBSD analyses. The proportion of 8.91 mu m grain size in the sample with high heat input is 4.2%, while it is 1.2% in the sample with low heat input. When the heat input increased from 12.5 to 62.5 J/mm, the width of the softened zone with the lowest hardnesses in the HAZ grew from 0.2 mm to 2.2 mm.
dc.description.sponsorshipBursa Uludag University Scientific Research Fund (BAP) [2019/6]
dc.description.sponsorshipThis study was supported by Bursa Uludag University Scientific Research Fund (BAP) (OUAP (MH) -2019/6) .
dc.identifier.doi10.1016/j.optlastec.2023.109560
dc.identifier.issn0030-3992
dc.identifier.issn1879-2545
dc.identifier.scopus2-s2.0-85162273960
dc.identifier.scopusqualityQ1
dc.identifier.urihttps://doi.org/10.1016/j.optlastec.2023.109560
dc.identifier.urihttps://hdl.handle.net/20.500.12604/6686
dc.identifier.volume164
dc.identifier.wosWOS:001004532400001
dc.identifier.wosqualityQ1
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherElsevier Sci Ltd
dc.relation.ispartofOptics and Laser Technology
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.snmzKA_20241222
dc.subjectFiber laser welding
dc.subject22MnB5 steel
dc.subjectHAZ softening
dc.subjectMechanical properties
dc.subjectMicrostructure
dc.titleEffect of heat input on HAZ softening in fiber laser welding of 22MnB5 steel
dc.typeArticle

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