Title: Developing parametric window and mathematical model to predict micro hardness of friction stir welded aluminium alloy AA6082

Authors: Gurmeet Singh; Kulwant Singh; Jagtar Singh

Addresses: Department of Mechanical Engineering, Sant Longowal Institute of Engineering and Technology, Longowal, Sangrur, Punjab-148006, India. ' Department of Mechanical Engineering, Sant Longowal Institute of Engineering and Technology, Longowal, Sangrur, Punjab-148006, India. ' Department of Mechanical Engineering, Sant Longowal Institute of Engineering and Technology, Longowal, Sangrur, Punjab-148006, India

Abstract: Compared to the fusion welding processes that are routinely used for joining of aluminium alloy, friction stir welding process is an emerging solid state joining process in which the material that is being welded does not melt and recast. This process uses a non-consumable tool to generate friction heat in the abutting surfaces. The welding parameters such as tool rotational speed, welding speed, axial force and pin diameter play a major role in deciding the weld quality. In this investigation, an attempt has been made to develop parametric window and mathematical model to predict the micro hardness of friction stir welded aluminium alloy 6082-T651. Four-factor five-level central composite rotatable design matrix has been used to minimise the number of experiments. The adequacy of the developed model was checked by ANOVA technique.

Keywords: friction stir welding; FSW; aluminium alloys; analysis of variance; ANOVA; parametric windows; mathematical modelling; microhardness.

DOI: 10.1504/IJMATEI.2011.042882

International Journal of Materials Engineering Innovation, 2011 Vol.2 No.3/4, pp.279 - 287

Published online: 07 Oct 2011 *

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