SYMPOSIA PAPER Published: 01 January 1969

Use of Electron Microfractography in Interpreting the Mechanisms of Fatigue Crack Propagation


Electron microfractography has been used in elucidating the mechanisms of fatigue crack propagation in two face-centered-cubic (fcc) sheet metals which had been treated to produce different preferred orientations or textures. Comparison of the striations on the fatigue fracture surfaces of cold-rolled material with those of the same material, annealed to give a different texture and a high ductility, showed the morphology of the striations to be dependent on ductility and texture. A qualitative mechanism is suggested for fatigue crack growth by the Stage II process, involving the formation of striations.

Author Information

Nair, K., D.
University of Saskatchewan, Saskatoon, Sask., Canada
Le May, I.
University of Saskatchewan, Saskatoon, Sask., Canada
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Developed by Committee: E08
Pages: 134–146
DOI: 10.1520/STP47359S
ISBN-EB: 978-0-8031-6941-8
ISBN-13: 978-0-8031-6646-2