期刊
ISIJ INTERNATIONAL
卷 51, 期 3, 页码 429-434出版社
IRON STEEL INST JAPAN KEIDANREN KAIKAN
DOI: 10.2355/isijinternational.51.429
关键词
TRIP steels; tensile test; laser beam welding; finite element; Abaqus
资金
- Welding and Joining Institute of the RWTH Aachen (Germany)
- Higher Education Ministry (Egypt)
This paper aims to evaluate and simulate the mechanical behavior of laser beam welded TRIP700 steel sheet under uniaxial tensile loading. In this work TRIP700 steel sheets with thickness of 1.2 mm were butt welded by CO2 laser beam welding using 4.5 kW as a laser beam power and 0 mm as a focus position. The welding speed was ranged from 2.1 to 3.9 m/min. Microhardness measurements and transverse tensile testing were carried out to characterize the welds. Numerical simulation with the finite element analysis code ABAQUS/CAE v6.9-1 was used to describe the elastoplastic behavior of the welded sheets. In a perpendicular tensile test to the weld line, all specimens were fractured at the base metal and the strengths were somewhat higher than those of base metal. The numerical results of the tensile testing had a good agreement with the experimental results.
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