...Yajun Dai; Chang Liu; Min Zhan; Xiangyu Wang; Chao He; Qingyuan Wang Purpose The investigations provide a basis for the optimization of the alloy 6061-T6 friction stir welding (FSW) process to improve the mechanical properties of welded joints. Design/methodology/approach The local deformation...

.... Findings Tensile properties were improved with the use of taper threaded cylindrical pin tool in friction stir welding process when compared with taper cylindrical and stepped cylindrical pin tools. This is due to refinement of grains and mixing of plasticized material occurred with generation...

...Nagabhushan Kumar Kadigithala; Vanitha C Purpose The main purpose of the present work is to evaluate, the microstructural and mechanical properties of friction stir welded plates of AZ91D magnesium alloy with 3 mm thickness, and to determine the optimum range of welding conditions. Design...

...Michael Papadopoulos; Spiros Pantelakis Purpose The Lack of Penetration (LoP) defect is one of the flaws that can be generated during the friction stir welding (FSW) process. Depending on the size, the depth and the severity of the LoP defect, it is possible that it is hardly detectable by optical...

...Mica Grujicic; Jennifer Snipes; S Ramaswami; Chian-Fong Yen Purpose – The weld region obtained during friction stir welding (FSW) of metallic materials (including aluminum alloys) contains typically well-defined zones, each characterized by fairly unique microstructure and properties. The purpose...

...Dr P.M.G. Moreira and Dr Paulo J. Tavares; F.F. Duarte; Virgínia Isabel V. Infante; P.M.G. Moreira; M. de Freitas; P.M.S.T. de Castro Purpose – Friction stir welding lap joints of aluminum alloy AA6082-T6 were joined using two distinct configurations. The purpose of this paper is to study...

...Sp. Pantelakis; Michael Papadopoulos; Sergio Tavares; Marco Pacchione; Spiros Pantelakis Purpose To investigate the effect of different welding configurations on the mechanical properties of friction stir welding (FSW) overlap joints. The application of FSW in an overlap configuration could...

...Sp. Pantelakis; Elias P. Koumoulos; Costas A. Charitidis; Nikolaos M. Daniolos; Dimitrios I. Pantelis Purpose The purpose of this paper is to determine if the nanoindentation technique is a reliable method and whether it can be used to measure the surface hardness (H) in friction stir welded...

...Sp. Pantelakis; Costas A. Charitidis; Dimitrios A. Dragatogiannis Purpose The purpose of this paper is to investigate the use of nanoindentation with a Berkovich indenter as a method of extracting equivalent stress‐strain curves for the base metal and the welded zone of a friction stir welded...