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Title:	Influence of the cooling time on the mechanical properties of welded HSS-joints
Abstract:	In Memoriam of Prof. Dr. Bernt Johansson The influence of the cooling time t8/5 has been examined as part of the ongoing AiF-FOSTA P1020 research project for the development of a new design approach for welded joints on high-strength steels. Four thermomechanically rolled and quenched steel grades were investigated. The temperature-time course of a MAG welding process was thermo-physically simulated in a quenching and deformation dilatometer to evaluate the material behaviour. Subsequently, the influence of the cooling time on the mechanical properties of welds was examined using a flat tensile test specimen with a centric hole. The results of the examinations form the scientific basis for a significant improvement of the current execution rules for welded joints between high-strength steels taking into account mismatching of base material and filler metal.
Source:	Steel Construction 11 (2018), No. 4
Page/s:	264-271
Language of Publication:	English

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