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dc.contributor.authorTOMASHCHUK, Iryna
dc.contributor.authorSALLAMAND, Pierre
dc.contributor.authorCICALA, E
dc.contributor.author
 hal.structure.identifier
PEYRE, Patrice
86289 Laboratoire Procédés et Ingénierie en Mécanique et Matériaux [PIMM]
dc.contributor.authorGREVEY, D
dc.date.accessioned2014
dc.date.available2014
dc.date.issued2014
dc.date.submitted2014
dc.identifier.issn0924-0136
dc.identifier.urihttp://hdl.handle.net/10985/9060
dc.description.abstractThe tensile strength of direct AA5754/Ti6Al4V joints performed by high speed Yb:YAG laser welding is found to be determined by morphology and phase content of dissimilar interface formed between contacting Al-rich and Ti-rich melted zones. Three types of contact interfaces were observed: (1) thin (<20 μm thick) interface composed mostly by TiAl and formed under 0.2 mm beam shift to Al side and linear energy of welding ≥37.5 kJ/m; (2) cracked interface (190–300 μm thick) composed by Al3Ti and other Al–Ti intermetallics and formed under beam shift at 0.2 mm to Ti side and linear energy ≥37.5 kJ/m; (3) malaxated interface composed of layers and isles of Ti3Al and TiAl forming in other tested conditions and favored by welding speed >10 m/min. Maximal linear tensile force (220 N/mm for 2 mm thick weld) can be attained when thin contact interface is formed. In this case, the fracture starts in intermetallics-rich zone but propagates mainly in Al-rich melted zone, when in other cases it occurs in brittle intermetallic layers.
dc.language.isoen
dc.publisherElsevier
dc.rightsPost-print
dc.subjectLaser welding
dc.subjectDissimilar metal joint
dc.subjectTitanium alloys
dc.subjectAluminum alloysa
dc.titleDirect keyhole laser welding of aluminum alloy AA5754 to titanium alloy Ti6Al4V
dc.identifier.doi10.1016/j.jmatprotec.2014.10.025
dc.typdocArticle dans une revue avec comité de lecture
dc.localisationCentre de Paris
dc.subject.halSciences de l'ingénieur: Matériaux
dc.subject.halSciences de l'ingénieur: Mécanique
ensam.audienceInternationale
ensam.page96–104
ensam.journalJournal of Materials Processing Technology
ensam.volume217
hal.identifierhal-01090999
hal.version1
hal.submission.permittedupdateMetadata
hal.statusaccept


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