Papers by Author: Sabine Lenser

Abstract: Strain induced by friction welding of dissimilar materials was determined by an imaging diffraction technique using the Material X-ray diffraction Imaging (MAXIM) detector at HASYLAB G3. Applying the sin2Ψ method in ω mode, a stress profile perpendicular to the weld joint was derived. Results are discussed and compared with measurements of the same specimen made at the neutron source of the GKSS Research Centre.

Abstract: Dissimilar welded components joined with any kind of welding technologies gain an increasing interest due to significant improvements in engineering structures by using new materials (alloys) or new materials combinations. The present paper deals with laser welding of Al5083-H111 and Al6013-T6 and the characterization of the crystallographic texture. Fine grained Al5083 was joined with coarser grained Al6013.Whereas, Al6013 is strongly oriented dominated by a strong cube component and a much lower Goss component, the finer grained Al5083 shows a week deformation texture. The welding seam itself has a moderate cube texture with a minor <100> fiber texture in welding direction. A small texture variation about the texture strength and the volume fraction of the fiber component was observed along the weld. Results were obtained by neutron, hard X-ray and electron diffraction.