SYMPOSIA PAPER Published: 01 January 1984
STP34453S

Corrosion Fatigue of 7000 Series Aluminum Alloys

Source

Results of fatigue testing of 7017-T651 aluminum alloy in seawater at frequencies from 0.1 to 70 Hz have been assessed in relation to the stress corrosion behavior of this material. In particular, the applicability of a simple superposition model is examined. Detailed fractographic examination indicates a dependence of fracture mode upon both crack growth rate and frequency that is consistent with a dependence upon the rate of diffusion of hydrogen in the material. Despite this, it seems that some other process provides the rate-determining step in the cracking. Various possibilities are considered.

Author Information

Henry Holroyd, NJ
Alcan International Limited, Banbury, Oxon, England
Hardie, D
University of Newcastle upon Tyne, England
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Details
Developed by Committee: G01
Pages: 534–547
DOI: 10.1520/STP34453S
ISBN-EB: 978-0-8031-4894-9
ISBN-13: 978-0-8031-0264-4