Journal
CORROSION SCIENCE
Volume 112, Issue -, Pages 308-326Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.corsci.2016.07.013
Keywords
Carbon steel; Hydrogen permeation; TEM; SEM; Hydrogen embrittlement; Hydrogen absorption
Funding
- Special Research Fund (BOF), UGent [BOF10/ZAP/121]
- Agency for Innovation by Science and Technology in Flanders (IWT) [SB111205]
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The hydrogen trapping of TiC and its effect on hydrogen embrittlement is investigated for Fe-C-Ti alloys with variable carbon content. Two conditions are compared; an as-quenched and quenched and tempered state in which carbides are generated. The hydrogen impact is demonstrated by tensile tests on unstressed samples without and after in-situ hydrogen charging. Thermal desorption spectroscopy and hot/melt extraction are performed to understand the carbide trapping ability and interpret the observed tendencies. The results indicate a correlation between hydrogen trapped at dislocations and the embrittlement degree. Slightly modified thermal treatments allowed confirming the beneficial effect of TiC addition. (C) 2016 Elsevier Ltd. All rights reserved.
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