Microstructure and mechanical properties of laser beam welded 10 mm-thick Q345 steel joints

Xie, Weifeng; Tu, Hao; Nian, Keyu; Zhang, Xiaobin

doi:10.1080/09507116.2023.2281502

Welding International

2023

DOI: 10.1080/09507116.2023.2281502

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Microstructure and mechanical properties of laser beam welded 10 mm-thick Q345 steel joints

Weifeng Xie,

Hao Tu,

Keyu Nian

et al.

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2024

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Experimental and Numerical Characterization of Local Properties in Laser-Welded Joints in Thin Plates of High-Strength–Low-Alloy Steel and Their Dependence on the Welding Parameters

Riofrío,

Barrionuevo,

Olmedo

et al. 2024

Metals

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Laser welding on thin plates of high-strength steel is increasing in various industrial applications. The mechanical behavior of welded joints depends on their local properties, which in turn depend on the welding parameters applied to join the base material. This work characterizes the local properties of butt-welded joints of thin plates of high-strength–low-alloy (HSLA) steel. This study focuses on the effect of welding parameters on the microstructure, tensile response, microhardness, and weld bead profile. For this purpose, a factorial experimental design was formed, covering a heat input range from 53 to 75 J/mm. This study identified the main effects and interactions of welding speed and laser power on the weld bead profile and on its width. The microstructure, weld bead width, hardness, and tensile mechanical properties were significantly influenced by heat input. Furthermore, numerical simulations on real weld bead profiles revealed high values of the stress concentration factor and suggested a correlation with heat input.

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Experimental and Numerical Characterization of Local Properties in Laser-Welded Joints in Thin Plates of High-Strength–Low-Alloy Steel and Their Dependence on the Welding Parameters

Riofrío,

Barrionuevo,

Olmedo

et al. 2024

Metals

View full text Add to dashboard Cite

show abstract

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Microstructure and mechanical properties of laser beam welded 10 mm-thick Q345 steel joints

Cited by 1 publication

References 24 publications

Experimental and Numerical Characterization of Local Properties in Laser-Welded Joints in Thin Plates of High-Strength–Low-Alloy Steel and Their Dependence on the Welding Parameters

Experimental and Numerical Characterization of Local Properties in Laser-Welded Joints in Thin Plates of High-Strength–Low-Alloy Steel and Their Dependence on the Welding Parameters

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