Open    Access



Laser Beam Welding of Alloyed Ultra-High Strength Steels



Author(s)

Stefan Lindner, Martin Dahmen and Benjamin Gerhards

Full-Text PDF XML     1115 Views

DOI:10.17265/2328-2223/2015.04.003

Stricter regulations for automotive car body engineering in point of CO₂ emissions and safety requirements demand the application of ultra-high strength materials for lightweight constructions. But components manufactured with new materials need established, cost-efficient and their benefits supporting production processes. One high potential process is laser beam welding with its high welding speed, enormous flexibility, low thermal distortion and slim weld shape. The combination of new materials on the one side, and challenging welding methods on the other side, makes a good understanding for the joining process as well as for the behavior of the base materials during the heat input necessary to create constructions which exploit the full lightweight potential and fulfill the extensive requirements. The following paper contributes to the safety applying of new materials into the car body manufacturing process by giving laser joining recommendations for a verified weldability.

Laser beam welding, chromium-manganese steels, ultra-high strength, press-hardening, lightweight, crash performance.