| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 7895354 | Corrosion Science | 2015 | 45 Pages |
Abstract
The influence of aging treatment on microstructure and corrosion fatigue crack growth (CFCG) behavior of oil-grade nickel-base alloy 718 is investigated. The average grain size of alloy 718 increases after aging treatment. Isolated platelet δ phases are precipitated at some of the grain boundaries in aged specimens. The one-step aged specimen shows a uniform distribution of fine spherical γⲠand elongated γⳠprecipitates. However, the two-step aged sample shows much finer γⳠprecipitates. Aging treatment leads to lower CFCG rates of alloy 718. Nevertheless, no visible difference of CFCG rates is observed between one-step aged and two-step aged specimens.
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Physical Sciences and Engineering
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Authors
Ting Chen, Jared Nutter, Jingsheng Bai, Jeffrey Hawk, Xingbo Liu,