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

Applied Microscopy

Research

Soo-Hyun Kim¹  T. T. T. Trang¹  Chang-Gon Jeong¹  Yoon-Uk Heo¹  Youngyun Woo²  Eun Yoo Yoon²  Young-Seon Lee²  Gun-Young Yoon² 

[1] Graduate Institute of Ferrous and Energy Materials Technology, Pohang University of Science and Technology, Cheongam-Ro 77, Hyoja dong, 37-673, Pohang, Republic of Korea;Korea Institute for Materials Science, 797 Changwon-daero, Seongsan-gu, 51508, Changwon, Republic of Korea;

关键词: EPMA quantification;    Retained austenite;    Multi-phase steel;    XRD;    Carbon content;   

DOI  :  10.1186/s42649-022-00083-0

 received in 2022-11-09, accepted in 2022-12-05,  发布年份 2022

来源: Springer

【 摘 要 】

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.

【 授权许可】

CC BY   
© The Author(s) 2022

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