Paper Title:
Experimental Investigation of Fatigue Crack Growth in the Welding Nugget of FSW Joints of a 6060 Aluminum Alloy
  Abstract

The work investigates the fatigue behavior of friction stir welded butt joints by means of fracture mechanics techniques. FSW joints of artificially aged AA6060 T6 aluminum alloy were studied. The welding was performed on 8 mm thick butt joined sheets by means of a CNC machine tool. Welding speed in the range between 117 and 683 mm/min and tool rotational speed between 838 and 1262 rpm were considered. Fatigue crack growth tests were performed according to ASTM E647 standard on CT specimens, under constant load amplitude conditions, at 0.1 minimum to maximum load ratio, with the notch placed in the dynamic recrystallization zone of weld nugget, oriented along the welding direction. The comparison of results demonstrates the crack growth rate is always equal or lower than the base material at low values of stress intensity range. At ΔK values above 12 MPa√m, crack growth rate was found to be higher than base material for high feed, low speed and high feed/speed ratio.

  Info
Periodical
Key Engineering Materials (Volumes 488-489)
Edited by
Z. Tonković and M.H. Aliabadi
Pages
343-346
DOI
10.4028/www.scientific.net/KEM.488-489.343
Citation
P. Marcassoli, M. Longo, G. D'Urso, C. Giardini, T. Pastore, "Experimental Investigation of Fatigue Crack Growth in the Welding Nugget of FSW Joints of a 6060 Aluminum Alloy", Key Engineering Materials, Vols. 488-489, pp. 343-346, 2012
Online since
September 2011
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Makoto Hayashi, Shinobu Okido
Abstract:In the X-ray diffraction method, the diffraction intensity, the half-value width, the residual stress and the amount of residual austenitic...
19
Authors: Rimma Lapovok
Abstract:Equal Channel Angular Extrusion (ECAE) has become a very popular tool for studying the evolution of microstructure and properties under...
37
Authors: Young Seok Song, M.R. Lee, Jeong Tae Kim
Abstract:Alloy 718 ingot with a diameter of 400mm was made by the vacuum melting process ; VIM followed by VAR. Compression tests were conducted on...
3124
Authors: Dong Woo Lee, Seok Swoo Cho, Won Sik Joo
Abstract:A roller mill is composed of several rollers, rotational table liners, hydraulic cylinders and raw materials are ground between the rollers...
457
Authors: Xin Min Tang, Xian Liang Zhou, Yong Jin Tang, Jian Wu Yan
Abstract:In this paper, using high tensile strength and yield strength of hot-rolling acid washing thin steel sheet instead of cold-rolling steel...
41