Aleksija Đurić (Author), Dragan Milčić (Author), Zijah Burzić (Author), Damjan Klobčar (Author), Miodrag Milčić (Author), Biljana Marković (Author), Vladislav Krstić (Author)

Abstract

The modern concept of lightweight design (LW) requires the application of different materials in one structure (multi-material structures). The structure of different materials has a good perspective for application in the automotive and aerospace industries but only if it is possible to achieve a quality joint between different materials. The most used technology for joining different materials in the automotive industry is Resistance spot welding (RSW). Due to different mechanical, physical, and chemical properties, the joining of different materials by RSW technology does not provide a quality joint, and accordingly, alternative technologies for joining different materials have emerged. Resistance element welding (REW) was developed to enable joint of different materials. This paper presents the welding of AW 5754 H22 Al alloy (1.0 mm-thick) and DP500 steel (1.5 mm-thick) using novel REW. The peak load, absorption energy, microstructure, microhardness and fatigue strength of the REW joint has been investigated. The joint of the same materials has been done also using conventional RSW to compare some results. The results that will be presented in this paper show that that REW can achieve reliable joining of the two materials at relatively low welding currents compared to RSW. Using REW process with a significantly lower welding current, satisfactory mechanical characteristics of the weld joint can be achieved, so peak load is between 2300–2500 N, displacement is between 2.5–3 mm and the absorption energy is between 3.3–5.7 J. REW joints showed fatigue strength with the fatigue limit of 882 N

Keywords

uporovno točkovno varjenje;mikrostruktura;mikrotrdota;spoji;resistance spot welding;resistance element welding;dissimilar materials joints;microstructure;microhardness;fatigue strength;

Data

Language: English
Year of publishing:
Typology: 1.01 - Original Scientific Article
Organization: UL FS - Faculty of Mechanical Engineering
UDC: 621.791
COBISS: 112978691 Link will open in a new window
ISSN: 2073-4352
Views: 57
Downloads: 22
Average score: 0 (0 votes)
Metadata: JSON JSON-RDF JSON-LD TURTLE N-TRIPLES XML RDFA MICRODATA DC-XML DC-RDF RDF

Other data

Secondary language: Slovenian
Secondary keywords: uporovno točkovno varjenje;mikrostruktura;mikrotrdota;spoji;
Type (COBISS): Article
Pages: str. 1-15
Volume: ǂVol. ǂ12
Issue: ǂiss. ǂ2
Chronology: Feb. 2022
DOI: 10.3390/cryst12020258
ID: 15766521
Recommended works:
, no subtitle data available
, no subtitle data available
, diplomsko delo univerzitetnega študijskega programa
, diplomsko delo Visokošolskega strokovnega študijskega programa I. stopnje Strojništvo - Projektno aplikativni program
, magistrsko delo