Journal
SCRIPTA MATERIALIA
Volume 183, Issue -, Pages 144-148Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.scriptamat.2020.03.013
Keywords
Maraging steel; Intermetallic precipitate; Carbide; Hydrogen
Categories
Funding
- Safran Aircraft Engines [2017/0988]
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New generation maraging steel developed by the aeronautical industry meet the highest mechanical standards thanks to the controlled growth of M2C carbides and B2-NiAl precipitates during aging treatment at around 500 degrees C. However, the literature has reported a low resistance of precipitation-hardened steel to hydrogen embrittlement that is associated with aging treatment and trapping at precipitates or reverted austenite. Thus, in relation to the complex microstructure of X23NiCoCr 13-6-3 maraging steel, hydrogen solubility and trapping was investigated using Thermodesorption Spectroscopy. A high apparent solubility of hydrogen was observed after aging that was attributed to reversible trapping at coherent B2-NiAl precipitates. (C) 2020 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
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