Effect of aging treatment on apparent hydrogen solubility and trapping in a new generation maraging steel. (1st July 2020)

• Record Type: Journal Article
• Authors: Rousseau, Camille; Oudriss, Abdelali; Milet, Remy; Feaugas, Xavier; El May, Mohamed; Saintier, Nicolas; Tonizzo, Quentin; Msakni-Malouche, Mariem
• Is Part Of: Scripta materialia. Number 183(2020)
• Page Start: 144
• Page End: 148
• Publication Date: 2020-07-01
• Subjects: Maraging steel -- Intermetallic precipitate -- Carbide -- Hydrogen; Materials -- Periodicals; Metallurgy -- Periodicals; Metalen; Legeringen; Materiaalkunde; Metals, metalworking and machinery industries; Metals; Electronic journals; 620.11
• DOI: 10.1016/j.scriptamat.2020.03.013
• Languages: English
• ISSNs: 1359-6462

Abstract

Abstract: New generation maraging steel developed by the aeronautical industry meet the highest mechanical standards thanks to the controlled growth of M2 C carbides and B2-NiAl precipitates during aging treatment at around 500 °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. Graphical abstract: Image, graphical abstract