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Quantitative Phase Analysis for Carbide Characterization in Steel Using Automated Electron Diffraction
Stockholm University, Faculty of Science, Department of Materials and Environmental Chemistry (MMK).
Stockholm University, Faculty of Science, Department of Materials and Environmental Chemistry (MMK).
Number of Authors: 32019 (English)In: Steel Research International, ISSN 1611-3683, E-ISSN 1869-344X, Vol. 90, no 1, article id 1800300Article in journal (Refereed) Published
Abstract [en]

Carbides are critical to many different properties in a steel. In this paper, the quantification of a carbide powder extracted from a stainless steel analyzed with profile refinement of X-ray powder diffraction patterns, is compared to a novel technique for automated electron diffraction pattern collection with a transmission electron microscope. The automated analysis has the advantage of collecting patterns from individual particles, hence avoiding issues such as overlapping reflections in powder diffractograms. Electron diffraction patterns with satisfactory quality are selected through a deep convoluted neural network and matched to a library of pre-calculated diffraction patterns, corresponding to a set of selected carbide crystal structures. The quantitative results from the automated particle analysis are in good agreement with the phases identified by powder profile refinement.

Place, publisher, year, edition, pages
2019. Vol. 90, no 1, article id 1800300
Keywords [en]
carbide, powder profile refinement, stainless steel, transmission electron microscopy, x-ray diffraction
National Category
Chemical Sciences
Identifiers
URN: urn:nbn:se:su:diva-165787DOI: 10.1002/srin.201800300ISI: 000454790200015OAI: oai:DiVA.org:su-165787DiVA, id: diva2:1290301
Available from: 2019-02-20 Created: 2019-02-20 Last updated: 2019-02-20Bibliographically approved

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