Welding of high strength steel with pre-and post-heating techniques
SSAB is a global leader in value added, high strength steel. SSAB offers products developed in close cooperation with its customers to reach a stronger, lighter and more sustainable world.
Welding of high strength steel, while maintaining the mechanical properties of the weld and in the heat affected zone is an important issue to resolve in order to enable the use of these steels in more demanding applications. New methods for welding hardenable steels were tested at the university. This has new post-heating technologies have been tested to avoid brittle martensite in the melt zone (FZ), as well as in the heat affected zone (HAZ). The methodology is based on controlled reheating by induction heating has resulted in the ability to control the hardness of the FZ and HAZ.
Purpose
The purpose of this project is to test different before and after heating technologies in welding at the SSAB made microalloyed high strength steel Domex 960 to determine their effect on the mechanical properties tensile strength and toughness of the welded joints.
Objectives
The goal is to test the at Luleå University of Technology in previous work using welding methodologies for Domex 960 to determine if the same opportunity to control the microstructure and mechanical properties can be enforced for this micro-alloyed steel for the steel tested in previous works.
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