Effect of aging treatment on apparent hydrogen solubility and trapping in a new generation maraging steel

SCRIPTA MATERIALIA

卷:183

Article

Rousseau, Camille^1,2,3  Oudriss, Abdelali¹  Milet, Remy¹  Feaugas, Xavier¹  El May, Mohamed²  Saintier, Nicolas²  Tonizzo, Quentin³  Msakni-Malouche, Mariem³ 

[1] La Rochelle Univ, LaSIE, UMR CNRS 7356, Ave Michel Crepeau, F-17042 La Rochelle, France

[2] I2M, UMR CNRS 5295, Esplanade Arts & Metiers, Arts & Metiers Campus Bordeaux Talence, F-33400 Talence, France

[3] Safran Aircraft Engines, Site Evry Corbeil,Rue Henri Auguste Desbrueres, F-91003 Evry, France

关键词: Maraging steel;    Intermetallic precipitate;    Carbide;    Hydrogen;   

DOI  :  10.1016/j.scriptamat.2020.03.013

来源: Elsevier

【 摘 要 】

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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