Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7171709 | International Journal of Fatigue | 2016 | 52 Pages |
Abstract
Crack growth rate and S-N fatigue testing of Custom 465-H950 was performed in 0.0006-3 M NaCl with different levels of pre-exposure. Custom 465-H950 exhibited a strong corrosion resistance to various NaCl-based exposures. Concurrent exposure and loading did not result in corrosion damage sufficiently severe to drive crack formation away from microstructure features (TiC particles). The total fatigue life of precorroded specimens (pit depth â40 μm, surface diameter â175 μm) increased 4-9 fold as [Clâ] decreased from 3.0 M to 0.0006 M. Detailed analysis demonstrated that the varying [Clâ] most strongly influenced the initiation life, with secondary contributions from the long- and short-crack propagation regimes.
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Physical Sciences and Engineering
Engineering
Mechanical Engineering
Authors
J. Ryan Donahue, James T. Burns,