Journal
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
Volume 588, Issue -, Pages 86-96Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.msea.2013.08.079
Keywords
Steel; Hydrogen embrittlement; Fatigue; Fracture; Electron microscopy
Categories
Funding
- Council of Scientific and Industrial Research (CSIR)
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Fatigue crack growth rate (FCGR) for an HSLA steel was studied with in-situ hydrogen charging. The effects of different parameters, like stress intensity range (Delta K), frequency, load ratio (R), stress values and crack length have been investigated. The hydrogen contribution to FCGR decreased with increasing Delta K. FCGR was inversely dependent on frequency. The role of loading strain rate on the hydrogen enhanced FCGR was explained. The effect of load ratio on hydrogen enhanced FCGR was not monotonic. A dependence of FCGR of hydrogenated samples on crack length was observed and explained. (C) 2013 Elsevier B.V. All rights reserved.
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