6533b7d9fe1ef96bd126d503
RESEARCH PRODUCT
Direct laser welding of pure titanium to austenitic stainless steel
Sébastien LafayeTommy BoucheronAlexandre MathieuAntoine MannucciIryna TomashchukEugen CicalaRodolphe Bolotsubject
0209 industrial biotechnologyMaterials scienceScanning electron microscopeEnergy-dispersive X-ray spectroscopyLaser beam weldingchemistry.chemical_element02 engineering and technologyengineering.material021001 nanoscience & nanotechnology020901 industrial engineering & automationFlexural strengthchemistryUltimate tensile strengthengineeringGeneral Earth and Planetary SciencesAustenitic stainless steelComposite material0210 nano-technologyBeam (structure)General Environmental ScienceTitaniumdescription
Abstract Direct butt joining of pure titanium to 316L stainless steel with continuous Yb:YAG laser was performed with variation of the beam offset from joint line. Mechanical properties of samples were evaluated by tensile tests and three-point flexural tests. The fractured surfaces and cross sections of welds were examined by scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS) and X-ray diffraction (XRD). Tensile properties of welds were strongly determined by the beam offset from joint line and are well described by Weibull statistics. Ultimate tensile strength of 174 ± 69 MPa and ultimate flexural strength of 297 ± 48 MPa were obtained. Brittle fracture took place in the diffusive interface rich in λ 1 and FeTi phases.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2018-01-01 | Procedia CIRP |