Changing the interfacial composition of carbide precipitates in metals and its effect on hydrogen trapping. (February 2019)

• Record Type: Journal Article
• Authors: Kirchheim, Reiner
• Is Part Of: Scripta materialia. Number 160(2019)
• Page Start: 62
• Page End: 65
• Publication Date: 2019-02
• Subjects: Carbides -- Hydrogen trapping -- Steel -- Interface vacancies -- Thermal desorption spectroscopy; Materials -- Periodicals; Metallurgy -- Periodicals; Metalen; Legeringen; Materiaalkunde; Metals, metalworking and machinery industries; Metals; Electronic journals; 620.11
• DOI: 10.1016/j.scriptamat.2018.09.043
• Languages: English
• ISSNs: 1359-6462

Abstract

Abstract: Hydrogen trapping at metal/carbide interfaces is changed with changing interfacial composition. This has been exemplified for the iron/vanadium carbide (VC) interface. It will be assumed that the carbide interface is a (100)-plane having a composition between the limiting cases of either 50% V and 50% C for excess carbon in iron or 50% V and 50% carbon-vacancies for excess vanadium in iron. The latter will provide strong traps for hydrogen. For validating the simple model a modified interpretation of published atom probe and thermal desorption data became necessary as discussed in the present work. Graphical abstract: