Phase Analysis of Steels by Grain-averaged EBSD Functions

Jun-Yun Kang; Do Hyun Kim; Sung-Il Baik; Tae-Hong Ahn; Young-Woon Kim; Heung Nam Han; Kyu Hwan Oh; Hu-Chul Lee; Seong Ho Han

doi:10.2355/isijinternational.51.130

Regular Article

Phase Analysis of Steels by Grain-averaged EBSD Functions

Jun-Yun Kang, Do Hyun Kim, Sung-Il Baik, Tae-Hong Ahn, Young-Woon Kim, Heung Nam Han, Kyu Hwan Oh, Hu-Chul Lee, Seong Ho Han

Author information

Jun-Yun Kang
Korea Institute of Materials Science
Do Hyun Kim
Department of Materials Science and Engineering, Seoul National University
Sung-Il Baik
Department of Materials Science and Engineering, Seoul National University
Tae-Hong Ahn
Department of Materials Science and Engineering, Seoul National University
Young-Woon Kim
Department of Materials Science and Engineering, Seoul National University
Heung Nam Han
Department of Materials Science and Engineering, Seoul National University
Kyu Hwan Oh
Department of Materials Science and Engineering, Seoul National University
Hu-Chul Lee
Department of Materials Science and Engineering, Seoul National University
Seong Ho Han
POSCO Research Laboratories

Keywords: EBSD, phase analysis, steel, grain average function, DP steel, TRIP steel

JOURNAL FREE ACCESS

2011 Volume 51 Issue 1 Pages 130-136

DOI https://doi.org/10.2355/isijinternational.51.130

Details

Abstract

EBSD mapping was used for phase analysis of multi-phase steels. Some products of austenite decomposition could be discriminated using a range of grain-average functions and properties derived from the map data. In DP steels, martensite could be extracted from the ferrite matrix using the average band contrast or a set of geographic information. Bainite in TRIP steel was identified with the local variations of band contrast and orientation inside a grain. As the proposed method reproduced a phase map, a visual confirmation of the result and additional analyses were possible.

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