Exudation of Material from Slip Bands at the Surface of Fatigued Crystals of an Aluminium–Copper Alloy

@article{Forsyth1953ExudationOM,
  title={Exudation of Material from Slip Bands at the Surface of Fatigued Crystals of an Aluminium–Copper Alloy},
  author={P. J. E. Forsyth},
  journal={Nature},
  year={1953},
  volume={171},
  pages={172-173}
}
  • P. Forsyth
  • Published 24 January 1953
  • Materials Science
  • Nature
No satisfactory explanation of the fatigue mechanism of metals has yet been advanced. The generally accepted idea involving work-hardening and subsequent ‘brittle’ fracture cannot be substantiated by observation as being the only cause of fatigue failure. Observations I have made on pure aluminium and aluminium–½ per cent silver specimens have shown that the mechanisms of failure at high and low stresses are fundamentally different1. 
A Slip-band Exudation Effect observed in Pure Aluminium
EARLIER work on the fatigue behaviour of aluminium − 4 per cent copper alloy had revealed that material was exuded from some of the active slip bands during the later stages of the fatigue test1.
A model of extrusions and intrusions in fatigued metals I. Point-defect production and the growth of extrusions
Abstract Based on recent experimental observations a realistic model of the evolution of the surface profile of persistent slip bands (PSBs) in fatigued metals is proposed. An essential feature of
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