EPMA quantification on the chemical composition of retained austenite in a Fe-Mn-Si-C-based multi-phase steel

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Abstract

An electron probe X-ray microanalyzer (EPMA) is an essential tool for studying chemical composition distribution in the microstructure. Quantifying chemical composition using standard specimens is commonly used to determine the composition of individual phases. However, the local difference in chemical composition in the standard specimens brings the deviation of the quantified composition from the actual one. This study introduces how to overcome the error of quantification in EPMA in the practical aspect. The obtained results are applied to evaluate the chemical composition of retained austenite in multi-phase steel. Film-type austenite shows higher carbon content than blocky-type one. The measured carbon contents of the retained austenite show good coherency with the calculated value from the X-ray diffraction.

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Author and article information

Contributors

Yoon-Uk Heo:

ORCID: http://orcid.org/0000-0003-4733-9370

yunuk01@postech.ac.kr

Journal

Journal ID (nlm-ta): Appl Microsc

Journal ID (iso-abbrev): Appl Microsc

Title: Applied Microscopy

Publisher: Springer Nature Singapore (Singapore )

ISSN (Print): 2287-5123

ISSN (Electronic): 2287-4445

Publication date (Electronic): 20 December 2022

Publication date PMC-release: 20 December 2022

Publication date Collection: December 2022

Volume: 52

Electronic Location Identifier: 14

Affiliations

[1 ]GRID grid.49100.3c, ISNI 0000 0001 0742 4007, Graduate Institute of Ferrous and Energy Materials Technology, , Pohang University of Science and Technology, ; Cheongam-Ro 77, Hyoja dong, Pohang, 37-673 Republic of Korea

[2 ]GRID grid.410902.e, ISNI 0000 0004 1770 8726, Korea Institute for Materials Science, ; 797 Changwon-daero, Seongsan-gu, Changwon, 51508 Republic of Korea

Author information

Yoon-Uk Heo http://orcid.org/0000-0003-4733-9370

Article

Publisher ID: 83

DOI: 10.1186/s42649-022-00083-0

PMC ID: 9768052

PubMed ID: 36538270

SO-VID: 66eaea52-d6e0-4e78-b8e3-f2f7afcf7197

License:

Open AccessThis article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.

History

Date received : 9 November 2022

Date accepted : 5 December 2022

Custom metadata

Keywords: epma quantification,retained austenite,multi-phase steel,xrd,carbon content

Data availability:

Keywords: epma quantification, retained austenite, multi-phase steel, xrd, carbon content

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Version and Review History

Preprint

Reviewed by Benjamin Buse

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