Metallographic Study of Overlapped Laser Welds of Dissimilar Materials

Anna Guzanová; Erik Janoško; Dagmar Draganovská; Ján Viňáš; Miroslav Tomáš; Janette Brezinová; Silvia Maláková; Miroslav Džupon; Marek Vojtko

doi:10.3390/met12101682

Metals (Oct 2022)

Metallographic Study of Overlapped Laser Welds of Dissimilar Materials

Anna Guzanová,
Erik Janoško,
Dagmar Draganovská,
Ján Viňáš,
Miroslav Tomáš,
Janette Brezinová,
Silvia Maláková,
Miroslav Džupon,
Marek Vojtko

Affiliations

Anna Guzanová: Department of Technology, Materials and Computer Supported Production, Faculty of Mechanical Engineering, Technical University of Košice, Mäsiarska 74, 040 01 Košice, Slovakia
Erik Janoško: Department of Technology, Materials and Computer Supported Production, Faculty of Mechanical Engineering, Technical University of Košice, Mäsiarska 74, 040 01 Košice, Slovakia
Dagmar Draganovská: Department of Technology, Materials and Computer Supported Production, Faculty of Mechanical Engineering, Technical University of Košice, Mäsiarska 74, 040 01 Košice, Slovakia
Ján Viňáš: Department of Technology, Materials and Computer Supported Production, Faculty of Mechanical Engineering, Technical University of Košice, Mäsiarska 74, 040 01 Košice, Slovakia
Miroslav Tomáš: Department of Automotive Production, Faculty of Mechanical Engineering, Technical University of Košice, Mäsiarska 74, 040 01 Košice, Slovakia
Janette Brezinová: Department of Technology, Materials and Computer Supported Production, Faculty of Mechanical Engineering, Technical University of Košice, Mäsiarska 74, 040 01 Košice, Slovakia
Silvia Maláková: Department of Engineering for Design of Machines and Transport Equipment, Faculty of Mechanical Engineering, Technical University of Košice, Letná 1/9, 042 00 Košice, Slovakia
Miroslav Džupon: Institute of Materials Research, Slovak Academy of Sciences, Watsonova 1935/47, 040 01 Košice, Slovakia
Marek Vojtko: Institute of Materials Research, Slovak Academy of Sciences, Watsonova 1935/47, 040 01 Košice, Slovakia

DOI: https://doi.org/10.3390/met12101682
Journal volume & issue: Vol. 12, no. 10
p. 1682

Abstract

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The paper deals with the metallographic analysis of overlapped laser welds of dissimilar materials based on galvanized and ungalvanized steels in various combinations. In addition to a gallery of metallographic sections, the paper presents the monitoring of weld defects, the measurement of selected weld geometrical characteristics and changes in weld microstructure by measuring the microhardness profile across the joint. The mixing of materials was monitored by area and line EDX analysis in the melting zone. Subsequently, the load carrying capacity of the formed joints was determined and compared with FEM simulation. Finally, the dependences of hardness and strength of welds on carbon content and carbon equivalent were determined.

Published in Metals

ISSN: 2075-4701 (Online)
Publisher: MDPI AG
Country of publisher: Switzerland
LCC subjects: Technology: Mining engineering. Metallurgy
Website: http://www.mdpi.com/journal/metals

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