Journal
JOURNAL OF MATERIALS PROCESSING TECHNOLOGY
Volume 225, Issue -, Pages 473-484Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jmatprotec.2015.06.021
Keywords
Friction stir spot welding; Dissimilar materials; Aluminium alloys; Galvanised steel; Automotive alloys; Process modelling
Funding
- EPSRC [EP/G022402/1, EP/G022674/1, EP/H020047/1]
- Engineering and Physical Sciences Research Council [EP/G022402/1, EP/G022674/1, EP/H020047/1] Funding Source: researchfish
- EPSRC [EP/G022674/1, EP/H020047/1, EP/G022402/1] Funding Source: UKRI
Ask authors/readers for more resources
The material flow in friction stir spot welding of aluminium to both aluminium and steel has been investigated, using pinless tools in a lap joint geometry. The flow behaviour was revealed experimentally using dissimilar Al alloys of similar strength. The effect on the material flow of tool surface features, welding conditions (rotation speed, plunge depth, dwell time), and the surface state of the steel sheet (un-coated or galvanized) have been systematically studied. A novel kinematic flow model is presented, which successfully predicts the observed layering of the dissimilar Al alloys under a range of conditions. The model and the experimental observations provide a consistent interpretation of the stick-slip conditions at the tool-workpiece interface, addressing an elusive and long-standing issue in the modelling of heat generation-in friction stir processing. (C) 2015 Elsevier B.V. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available