ISIJ International
Online ISSN : 1347-5460
Print ISSN : 0915-1559
ISSN-L : 0915-1559
Regular Article
In situ Observation of the Influence of Al on Deformation-induced Twinning in TWIP Steel
Il-Chan JungLawrence ChoBruno Charles De Cooman
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2015 Volume 55 Issue 4 Pages 870-876

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Abstract

The deformation twinning behavior of Fe18Mn0.6C and Fe18Mn0.6C-2.5Al twinning-induced plasticity steels was compared by in-situ electron backscattering diffraction. Al suppressed deformation-induced twinning. A constitutive model considering the effect of Al on the twin formation kinetics was used to show that the work hardening and the ultimate tensile strength were lowered by the suppression of deformation twinning despite the pronounced solution hardening contribution of Al.

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© 2015 by The Iron and Steel Institute of Japan
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