THERMAL SCIENCE

International Scientific Journal

Alin Constantin Murariu

,

Darko M. Veljić

,

Dragana Barjaktarević

,

Marko P. Rakin

,

Nenad A. Radović

,

Aleksandar S. Sedmak

,

Jelena Đoković

INFLUENCE OF MATERIAL VELOCITY ON HEAT GENERATION DURING LINEAR WELDING STAGE OF FRICTION STIR WELDING

ABSTRACT
The heat generated during friction stir welding (FSW) process depends on plastic deformation of the material and friction between the tool and the material. In this work, heat generation is analysed with respect to the material velocity around the tool in Al alloy Al2024-T351 plate. The slip rate of the tool relative to the workpiece material is related to the frictional heat generated. The material velocity, on the other hand, is related to the heat generated by plastic deformation. During the welding process, the slippage is the most pronounced on the front part of the tool shoulder. Also, it is higher on the retreating side than on the advancing side. Slip rate in the zone around the tool pin has very low values, almost negligible. In this zone, the heat generation from friction is very low, because the material is in paste-like state and subjected to intensive plastic deformation. The material flow velocity around the pin is higher in the zone around the root of the pin. In the radial direction, this quantity increases from the pin to the periphery of the tool shoulder. [Projekat Ministarstva nauke Reublike Srbije, br. TR 35002 i br. IP 451-03-2802/2013-16/69]
KEYWORDS
friction stir welding, numerical simulation, material velocity, slip rate, heat generation, equivalent plastic strain
PAPER SUBMITTED: 2015-09-04
PAPER REVISED: 2015-12-11
PAPER ACCEPTED: 2015-12-20
PUBLISHED ONLINE: 2016-01-01
DOI REFERENCE: https://doi.org/10.2298/TSCI150904217M
CITATION EXPORT: view in browser or download as text file
THERMAL SCIENCE YEAR 2016, VOLUME 20, ISSUE Issue 5, PAGES [1693 - 1701]
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Influence of material velocity on heat generation during linear welding stage of friction stir welding

© 2024 Society of Thermal Engineers of Serbia. Published by the Vinča Institute of Nuclear Sciences, National Institute of the Republic of Serbia, Belgrade, Serbia. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution-NonCommercial-NoDerivs 4.0 International licence