Hydrogen trapping at dislocations, carbides, copper precipitates and grain boundaries in a dual precipitating low-carbon martensitic steel. (December 2022)

• Record Type: Journal Article
• Authors: McCarroll, Ingrid E.; Lin, Yu-Chen; Rosenthal, Alexander; Yen, Hung-Wei; Cairney, Julie M.
• Is Part Of: Scripta materialia. Number 221(2022)
• Publication Date: 2022-12
• Subjects: Materials -- Periodicals; Metallurgy -- Periodicals; Metalen; Legeringen; Materiaalkunde; Metals, metalworking and machinery industries; Metals; Electronic journals; 620.11
• DOI: 10.1016/j.scriptamat.2022.114934
• Languages: English
• ISSNs: 1359-6462

Abstract

Abstract: By using atom probe tomography to detect deuterium in a dual precipitating low carbon martensitic steel we provide insight into the relationship between hydrogen (H), carbon, and microstructural features. TiC and Cu precipitates were found to provide H trapping sites, however, dislocations without C were not observed to trap H. The order of trapping from highest to lowest concentrations of deuterium (D) is as follows: TiC decorated dislocations > high energy grain boundaries > low energy grain boundaries. Graphical abtract: Image, graphical abstract