Roy, A and Manna, I and Chattoraj, I (2014) Anomalies in hydrogen enhanced fatigue of a high strength steel. International Journal of Fatigue, 59 (IF-1.730). pp. 14-22.
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Abstract
Fatigue crack growth for an HSLA steel was studied with in situ hydrogen charging. The hydrogen effect was highest at low Delta K values. The anomalies in hydrogen effect were found in the relative insensitivity of the crack growth rates to Delta K in a decreasing Delta K test protocol, and in the distinct differences of the crack growth rates for different loading protocols. These anomalies are explained by the hydrogen availability at the crack tip as a function of the test parameters. A "t" and "Delta K" based parameter was found to be universally applicable for hydrogen enhanced fatigue irrespective of loading protocol. (C) 2013 Elsevier Ltd. All rights reserved
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | Fatigue crack growth; Hydrogen embrittlement; Stress gradient; Loading protocol; Hydrogen diffusion |
| Subjects: | Materials Science |
| Divisions: | Business Development and Monitoring |
| Depositing User: | Users 5 not found. |
| Date Deposited: | 27 Jan 2014 10:44 |
| Last Modified: | 04 May 2016 09:21 |
| URI: | http://eprints.nmlindia.org/id/eprint/6822 |
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