QUALITY AND MECHANICAL PROPERTIES OF FRICTION STIR WELDED AA7075-T651 JOINTS USING DIFFERENT TOOLS AND WELDING MODES

Language: ENPages: 54–60

Assoc. Prof. Danail Gospodinov, PhD

Department of Materials Science & Technology “Angel Kanchev” University of Ruse, Bulgaria

ORCID: 0000-0002-8239-2321

E-mail: dgospodinov@uni-ruse.bg

Assist. Prof. Nikolay Ferdinandov, PhD

Department of Materials Science & Technology “Angel Kanchev” University of Ruse, Bulgaria

ORCID: 0009-0007-6063-4813

E-mail: nferdinandov@uni-ruse.bg

Daniela Nenova, PhD Student

Department of Material Science and Technology “Angel Kanchev” University of Ruse, Bulgaria

ORCID: 0009-0005-7202-548X

E-mail: dnenova@uni-ruse.bg

Abstract: Friction stir welding enables the joining of all types of aluminum alloys, including those belonging to the 2xxx and 7xxx series. The joining process is carried out in the solid state using a rotating tool, while the generated heat does not reach the melting temperature of the welded materials. The main factors determining the quality of the welded joint are the temperature and the material flow within the welding zone.
The aim of this study is to present the feasibility of friction stir welding of the high-strength aluminum alloy AA7075-T651 using two different types of tools, as well as to investigate their influence on the quality and mechanical properties of the resulting joints.

Keywords: Friction Stir Welding, Mechanical Properties, Aluminum Alloy АА 7075-Т651

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