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Quantification of Ridging in Ferritic Stainless Steel Sheets by Electron Backscattered Diffraction R-Value Maps

Published online by Cambridge University Press:  06 August 2013

Kye-Man Lee ,
Jieon Park ,
Sangseok Kim ,
Sooho Park  and
Moo-Young Huh
Kye-Man Lee
Affiliation:
Department of Materials Science and Engineering, Korea University, Seoul 136-701, Republic of Korea
Jieon Park
Affiliation:
Stainless Steel Product Research Group, Technical Research Laboratories, POSCO, Pohang 790-785, Republic of Korea
Sangseok Kim
Affiliation:
Stainless Steel Product Research Group, Technical Research Laboratories, POSCO, Pohang 790-785, Republic of Korea
Sooho Park
Affiliation:
Stainless Steel Product Research Group, Technical Research Laboratories, POSCO, Pohang 790-785, Republic of Korea
Moo-Young Huh*
Affiliation:
Department of Materials Science and Engineering, Korea University, Seoul 136-701, Republic of Korea
*
*Corresponding author. E-mail: myhuh@korea.ac.kr
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Abstract

In ferritic stainless steel (FSS), undesirable surface defects of ridging appear during deep drawing. The formation of these defects is attributed to the inhomogeneous distribution of orientations of individual grains. In the present work, a new electron backscattered diffraction R(α)-value map was introduced, and the dependence of the tensile directions on the formation of ridging in an FSS sheet was discussed using this map. The results showed that large grain colonies in the R(α)-value maps lead to the formation of severe ridging in an FSS sheet.

Keywords

EBSD property mapR-value mapmicrotextureridgingLankford parameterferritic stainless steel
Type
Research Article
Information
Microscopy and Microanalysis , Volume 19 , Supplement S5: IUMAS , August 2013 , pp. 17 - 20
Copyright
Copyright © Microscopy Society of America 2013 

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