TY  - CONF
A1  - Hübner, Martin
A1  - Dittmann, Florian
A1  - Kromm, Arne
A1  - Varfolomeev, Igor
A1  - Kannengießer, Thomas
T1  - Residual stress reduction using a low transformation temperature welding consumable with focus on the weld geometry
T2  - Welding in the World
N2  - Low transformation temperature (LTT) welding consumables represent an innovative approach to realize compressive residual stress in the weld seam and HAZ. LTT welding consumables use the volume-expanding martensitic phase transformation near room temperature to generate compressive residual stress during cooling. This article focuses on the weld geometry and its influence on residual stress reduction using an LTT welding consumable. For this purpose, layers with an LTT welding consumable were additionally applied to the front sides of conventionally welded longitudinal stiffeners. Different weld geometries of the second weld seam could be realized by varying the welding parameters. These samples were analyzed for geometric parameters, chemical composition, and residual stress. While the chemical composition and martensite start temperature (MS) were only slightly influenced by parameter changes, a clear influence with regard to residual stress and weld geometry was observed. Depending on the shape of the second LTT weld seam, residual stress reductions of 200 to 500 MPa were achieved using the same LTT welding consumable.
T2  - IIW Annual Assembly and International Conference
CY  - Rhodes Island, Dodecanisa, Greece
DA  - 07.07.2024
KW  - Low transformation temperature (LTT)
KW  - Martensite start temperature
KW  - Dilution
KW  - Weld geometry
KW  - Residual stress
PY  - 2025
UR  - https://nbn-resolving.org/urn:nbn:de:kobv:b43-633707
DO  - https://doi.org/10.1007/s40194-025-02094-3
SN  - 1878-6669
SP  - 1
EP  - 11
PB  - Springer Nature
CY  - Berlin ; Heidelberg
AN  - OPUS4-63370
LA  - eng
AD  - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany
ER  -