The Influence of Pre-Heating on the Weldability of Pure Copper by FSW
Pierpaolo Carlone*, Gaetano S. Palazzo
Identifiers and Pagination:Year: 2014
First Page: 177
Last Page: 184
Publisher Id: TOMEJ-8-177
Article History:Received Date: 01/03/2014
Revision Received Date: 25/05/2014
Acceptance Date: 26/05/2014
Electronic publication date: 13/6/2014
Collection year: 2014
open-access license: This is an open access article distributed under the terms of the Creative Commons Attribution 4.0 International Public License (CC-BY 4.0), a copy of which is available at: (https://creativecommons.org/licenses/by/4.0/legalcode). This license permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
This paper deals with an experimental investigation on the friction stir welding of pure copper. 4 mm thick copper plates have been welded in the butt joint configuration using a conical unthreaded tool, with and without preheating. An electrically heated backing plate has been employed to increase the initial temperature of the plates and to investigate the influence of pre-heating on the weld ability of the considered material. The welded joints have been analyzed by means of macroscopic and microscopic observations, microhardness measurements and tensile tests. Obtained outcomes suggest that more complex pin shape is needed to promote an adequate material flow without preheating.