Failure modes and fatigue behavior of conventional and refilled friction stir spot welds in AA 6061-T6 sheets

Venukumar, S and Muthukumaran, S and Yalagi, SwaroopG and Kailas, SatishV (2014) Failure modes and fatigue behavior of conventional and refilled friction stir spot welds in AA 6061-T6 sheets. In: INTERNATIONAL JOURNAL OF FATIGUE, 61 . pp. 93-100.

PDF int_jou_fat_61_93_2014.pdf - Published Version Restricted to Registered users only Download (3MB) | Request a copy

Abstract

The fatigue behavior of conventional friction stir spot welding (FSSW) and friction stir spot welding refilled by the friction forming process (FSSW-FFP) in aluminum 6061-T6 lap shear specimens, are investigated based on the experimental observations. Optical micrographs of the welds after fatigue failure in both the cases are examined to study the fatigue crack propagation and failure modes. Experimental results indicate that the fatigue strength of the FSSW-FFP weld samples is higher than that of the conventional FSSW samples at all loads. Fracture surfaces are analyzed in detail using the scanning electron microscope. (C) 2013 Elsevier Ltd. All rights reserved.

Item Type:	Journal Article
Publication:	INTERNATIONAL JOURNAL OF FATIGUE
Publisher:	ELSEVIER SCI LTD
Additional Information:	Copyright for this article belongs to the ELSEVIER SCI LTD, ENGLAND
Keywords:	FSSW; AA 6061-T6; Fatigue strength; Failure mode; Kinked crack
Department/Centre:	Division of Mechanical Sciences > Mechanical Engineering
Date Deposited:	07 Apr 2014 09:34
Last Modified:	07 Apr 2014 09:34
URI:	http://eprints.iisc.ac.in/id/eprint/48813

Actions (login required)

View Item