Direct keyhole laser welding of aluminum alloy AA5754 to titanium alloy Ti6Al4V
dc.contributor.author | TOMASHCHUK, Iryna |
dc.contributor.author | SALLAMAND, Pierre |
dc.contributor.author | CICALA, E |
dc.contributor.author
hal.structure.identifier | PEYRE, Patrice
|
dc.contributor.author | GREVEY, D |
dc.date.accessioned | 2014 |
dc.date.available | 2014 |
dc.date.issued | 2014 |
dc.date.submitted | 2014 |
dc.identifier.issn | 0924-0136 |
dc.identifier.uri | http://hdl.handle.net/10985/9060 |
dc.description.abstract | The 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.iso | en |
dc.publisher | Elsevier |
dc.rights | Post-print |
dc.subject | Laser welding |
dc.subject | Dissimilar metal joint |
dc.subject | Titanium alloys |
dc.subject | Aluminum alloysa |
dc.title | Direct keyhole laser welding of aluminum alloy AA5754 to titanium alloy Ti6Al4V |
dc.identifier.doi | 10.1016/j.jmatprotec.2014.10.025 |
dc.typdoc | Article dans une revue avec comité de lecture |
dc.localisation | Centre de Paris |
dc.subject.hal | Sciences de l'ingénieur: Matériaux |
dc.subject.hal | Sciences de l'ingénieur: Mécanique |
ensam.audience | Internationale |
ensam.page | 96–104 |
ensam.journal | Journal of Materials Processing Technology |
ensam.volume | 217 |
hal.identifier | hal-01090999 |
hal.version | 1 |
hal.submission.permitted | updateMetadata |
hal.status | accept |