Paper Titles
Hydrogen Accumulation during Fatigue Deformation of Al-Mg-Si Base Alloys
p.1053
High-Temperature Fatigue of Deep Rolled Aluminium Alloy AA6110-T6
p.1059
Effect of Periodic Overloads on Fatigue Crack Propagation in Aluminium Alloys
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Microstructural Factors Affecting Fatigue Initiation in Various Al Based Bearing Alloys
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Fatigue Behaviour in Fine Grained Aluminium Alloys
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Microstructural Analysis of Fatigue Initiation in Al-Si Casting Alloys
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Role of Residual Stresses on Fatigue Crack Propagation of FSW 6056-T78 Aluminium Joints under Various Technologies
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Combined Simulation and Experiment for Friction Stir Welding Process Development
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Modelling Precipitate Evolution during Friction Stir Welding of Aerospace Aluminium Alloys
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Fatigue Behaviour in Fine Grained Aluminium Alloys

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Abstract:

The effects of alloy production method on microstructure and hence fatigue crack growth rate and fracture mechanism have been examined for a variety of fine-grained/high dispersoid Al-Li-Mg-Zr and Al-Li-Cu-Mg-Zr alloys. Microstructures have been assessed by scanning and transmission electron microcopy, together with electron back scattered diffraction pattern assessment. In these fine-grained/high dispersoid materials, high crack growth rates are seen in comparison to the traditional DC cast alloys, excepting a material with high volume fraction of shearable precipitate. The effects of fracture surface roughness and closure levels in determining crack growth rates has been assessed.

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Periodical:

Materials Science Forum (Volumes 519-521)

Pages:

1077-1082

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.519-521.1077

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Online since:

July 2006

Authors:

L.J. Venning, I. Sinclair, P.A.S. Reed

Keywords:

Closure, Dispersoid, Fatigue, Spray Formed Aluminum

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© 2006 Trans Tech Publications Ltd. All Rights Reserved

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