TY - CONF A1 - Kromm, Arne A1 - Liepold, Philipp A1 - Kannengießer, Thomas T1 - Investigation of restraint intensity influence on solidification cracking of high-strength filler materials in fillet welds via CTS testing N2 - Next to chemical composition, metallurgy and welding parameters, the intensity of restraint is one of the variables influencing solidification cracking. Tests like the Houldcroft Test, rate the hot cracking susceptibility indirectly on the amount of restraint the welding can endure without cracking. Modern lightweight steel construction welds can be subject to a larger amount of restraint due to their high-strength nature compared to classical use cases. By varying the plate thickness of Controlled Thermal Severity (CTS) tests produced out of S1100 QL, it was possible to vary the intensity of restraint on fillet welds at a high level. Testing was conducted with four different filler wires for Metal Active Gas (MAG) welding, including three solid and one metal-cored wire. In addition, two sets of welding parameters were tested. The first set with high heat input and high welding speed was shown to be more prone to solidification cracking compared to the second set with lower heat input and welding speed. The results show an increase in solidification cracking with increasing restraint severity. T2 - IIW Intermediate Meeting Comission II-A CY - Incheon, Republic of Korea DA - 12.03.2024 KW - Solidification cracking KW - High strength steel KW - Weldability PY - 2024 AN - OPUS4-59748 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER -