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Article

Mechanical and Microstructural Investigations of the Laser Welding of Different Zinc-Coated Steels

by 1,* and 2
1
Department of Mechanical Technology and Materials, Faculty of Mechanical Engineering, Technical University of Košice, Mäsiarska 74, 040 01 Košice, Slovakia
2
Department of Computer Support of Technology, Faculty of Mechanical Engineering, Technical University of Košice, Mäsiarska 74, 040 01 Košice, Slovakia
*
Author to whom correspondence should be addressed.
Metals 2019, 9(1), 91; https://doi.org/10.3390/met9010091
Received: 9 December 2018 / Revised: 5 January 2019 / Accepted: 11 January 2019 / Published: 16 January 2019
(This article belongs to the Special Issue Science, Characterization and Technology of Joining and Welding)
Tailor welded blanks (TWB) represent an anisotropic and non-homogenous material. The knowledge of the mechanical properties and microstructure of the fusion zone and heat-affected zone (HAZ) obtained with laser welding is essential to ensure the reliability of the process. In this paper, laser-welded hot-dip Zn-coated low carbon microalloyed steels with different thickness and mechanical properties were used. The mechanical properties of the laser-welded blanks were determined by tensile tests and formability by Erichsen cupping tests. In addition, the pore formation during the laser welding process was analyzed. The microstructural analysis confirmed the formation of the favorable structure of the weld metal and the heat-affected zone without the presence of martensite. The obtained results showed that it is possible to produce TWBs with suitable mechanical properties by laser welding. View Full-Text
Keywords: tailor welded blanks; laser welding; Zn-coated low carbon microalloyed steels; microstructure; pores tailor welded blanks; laser welding; Zn-coated low carbon microalloyed steels; microstructure; pores
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MDPI and ACS Style

Zdravecká, E.; Slota, J. Mechanical and Microstructural Investigations of the Laser Welding of Different Zinc-Coated Steels. Metals 2019, 9, 91. https://doi.org/10.3390/met9010091

AMA Style

Zdravecká E, Slota J. Mechanical and Microstructural Investigations of the Laser Welding of Different Zinc-Coated Steels. Metals. 2019; 9(1):91. https://doi.org/10.3390/met9010091

Chicago/Turabian Style

Zdravecká, Eva, and Ján Slota. 2019. "Mechanical and Microstructural Investigations of the Laser Welding of Different Zinc-Coated Steels" Metals 9, no. 1: 91. https://doi.org/10.3390/met9010091

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