The Effect of Potential on the Corrosion Fatigue Behavior of a Precipitation Hardened Aluminum Alloy.
Abstract
Fatigue experiments were conducted on polycrystalline and monocrystalline samples of a high purity Al alloy in the peak-hardened heat treatment condition. These experiments were conducted in dry laboratory air and in 0.5 N NaCl solutions at the corrosion potential and at applied potentials cathodic to the corrosion potential. It has been shown that saline solutions severely reduce the fatigue resistance of the alloy, resulting in considerable amounts of intergranular crack initiation and propagation under freely corroding conditions for polycrystalline samples. Applied cathodic potentials resulted in still larger decreases in fatigue resistance and, for polycrystals, increased the degree of transgranular crack initiation of propagation.
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 01, 1984
- Accession Number
- ADA146537
Entities
People
- D. J. Duquette
- E. F. Smith Iii
Organizations
- Rensselaer Polytechnic Institute