Improved resistance to hydrogen embrittlement in a high-strength steel by quenching–partitioning–tempering treatment. (1st March 2015)

• Record Type: Journal Article
• Authors: Zhu, Xu; Li, Wei; Hsu, T.Y.; Zhou, Shu; Wang, Li; Jin, Xuejun
• Is Part Of: Scripta materialia. Volume 97(2015)
• Page Start: 21
• Page End: 24
• Publication Date: 2015-03-01
• Subjects: Quenching–partitioning–tempering (Q-P-T) -- Hydrogen embrittlement -- ε-Carbide -- Hydrogen trapping -- Three-dimensional atom probe (3DAP); Materials -- Periodicals; Metallurgy -- Periodicals; Metalen; Legeringen; Materiaalkunde; Metals, metalworking and machinery industries; Metals; Electronic journals; 620.11
• DOI: 10.1016/j.scriptamat.2014.10.030
• Languages: English
• ISSNs: 1359-6462

Abstract

Abstract : The effect of ε-carbide on hydrogen embrittlement (HE) susceptibility was evaluated in a quenching–partitioning–tempering (Q-P-T) treated steel. Total elongation loss (1 min hydrogen charging) drops from 42.7% to 0.6% after the tempering treatment. A significant improvement to HE is associated with the trapping capacity of ε-carbide, which is revealed by thermal desorption spectroscopy analysis and three-dimensional atom probe. A possible mechanism is discussed to explain the improved resistance to HE.