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Numerical simulation of laser preheating of friction stir welding of dissimilar metals
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Product and Production Development.ORCID iD: 0000-0002-9010-1555
Department of Welding and Joining Science Engineering, Graduate School, Chosun University.
Department of Welding and Joining Science Engineering, Chosun University.
Department of Welding and Joining Science Engineering, Chosun University.
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2017 (English)In: Science and technology of welding and joining, ISSN 1362-1718, E-ISSN 1743-2936Article in journal (Refereed) Epub ahead of print
Abstract [en]

Friction stir welding, FSW, of harder metal alloys is difficult to perform, like here dissimilar welding of titanium alloy to stainless steel in butt joint configuration. One major limitation is tool wear which can be reduced by preheating with a laser beam. A mathematical model to calculate the tool forces during FSW was developed further. The calculations show that the laser beam reduces forces at the pin and shoulder of the FSW-tool, accompanied by reduced heat generation through the tool. Within its operating limits, the process has low sensitivity on the lateral position of the leading laser beam. The model supports the understanding and optimisation of the complex interaction zone of forces and heat around the FSW-tool.

Place, publisher, year, edition, pages
Taylor & Francis, 2017.
National Category
Manufacturing, Surface and Joining Technology
Research subject
Manufacturing Systems Engineering
Identifiers
URN: urn:nbn:se:ltu:diva-66366DOI: 10.1080/13621718.2017.1391936OAI: oai:DiVA.org:ltu-66366DiVA: diva2:1154499
Available from: 2017-11-02 Created: 2017-11-02 Last updated: 2017-11-24

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