Paper Title:
Effect of Tool Speeds during Friction Stir Lap Welding on Mode of Fracture and Fracture Strength of Al 6060-T5 Joints
  Abstract

Friction stir lap welding (FSLW) of an age hardened Al alloy and evaluations of how FS speeds affected hooking and how hooking and softening due to FS affected fracture strength of the lap welds have been conducted. It was found that increasing rotation speed () and reducing welding speed (v) increased the stir zone size (AB-SZ) and also hook size (h), although a maximum value of h (hMax) reached. The features of hooks for the observed (,v)- AB-SZ-h relationships are presented and explained. It was found that when h increased to a value of ~ 0.9 mm (for the 3 mm alloy sheets), it started to invoke a significant effect on reducing fracture strength. Factors such as FS softening and insufficient joining, limited the fracture strength of the lap welds for small h values and these are presented and discussed.

  Info
Periodical
Edited by
George Ferguson, Ashvin Thambyah, Michael A Hodgson and Kelly Wade
Pages
77-80
DOI
10.4028/www.scientific.net/AMR.275.77
Citation
S. Yazdanian, Z. W. Chen, G. Littlefair, "Effect of Tool Speeds during Friction Stir Lap Welding on Mode of Fracture and Fracture Strength of Al 6060-T5 Joints", Advanced Materials Research, Vol. 275, pp. 77-80, 2011
Online since
July 2011
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$32.00
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