Pulsed Laser Weldability of the Third Generation Advanced High Strength Steel

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Pulsed Laser Weldability of the Third Generation Advanced High Strength Steel

March 8, 2021 Science and Technology 0

The automotive industry is increasingly using Advanced High Strength Steels (AHSS) in the manufacture of components to meet the demands of vehicular protection and greenhouse gas emission reduction. With the emergence of a new generation of AHSS, it is critical to investigate their actions in relation to automotive manufacturing processes. The welding capability of newly produced third-generation Gen3 980T steel was investigated using Nd:YAG laser welding under various parameter conditions for this reason. Uniaxial tensile measurements, micro-hardness Scanning Electron Microscopy (SEM), and X-Ray Diffraction were used to conduct the investigation (XRD). The gap between the fracture and the weld bead, as well as the surface finish, were used to assess the weld’s efficiency. There was a correlation between weld efficiency and energy density, which was expressed as partial penetration for values below the optimal and irregularities in the weld bead and a large number of spatters for values above the optimal. The phase transition occurs during welding, resulting in a large amount of martensite. This results in a 53.7 percent rise in hardness in the fusion region. To measure the sum of each step, further research is needed, but this is a subject for future research.

Author (s) Details

António B. Pereira
TEMA–Centre for Mechanical Technology and Automation, Department of Mechanical Engineering, University of Aveiro, Campus de Santiago, 3810-193, Aveiro, Portugal.

Rafael O. Santos
TEMA – Centre of Mechanical Technology and Automation, Department of Mechanical Engineering, University of Aveiro, Portugal and Department of Mechanical Engineering, Centro Federal de Educação Tecnológica Celso Suckow da Fonseca CEFET/RJ, Angra dos Reis, Brazil and Graduation Program of Metallurgical Engineering, Universidade Federal Fluminense, Volta Redonda, Brazil.

Bruno S. Carvalho
TEMA – Centre of Mechanical Technology and Automation, Department of Mechanical Engineering, University of Aveiro, Portugal.

Marilena C. Butuc
TEMA – Centre of Mechanical Technology and Automation, Department of Mechanical Engineering, University of Aveiro, Portugal.

Gabriela Vincze
TEMA – Centre of Mechanical Technology and Automation, Department of Mechanical Engineering, University of Aveiro, Portugal.

Luciano P. Moreira
Graduation Program of Metallurgical Engineering, Universidade Federal Fluminense, Volta Redonda, Brazil.

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