Strain hardening behavior of high performance FBDP, TRIP and TWIP steels

Cai, Ming-hui, Ding, Hua, Tang, Zheng-you, Lee, Hua-ying and Lee, Young-kook 2011, Strain hardening behavior of high performance FBDP, TRIP and TWIP steels, Steel research international, vol. 82, no. 3, pp. 242-248, doi: 10.1002/srin.201000132.

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Title Strain hardening behavior of high performance FBDP, TRIP and TWIP steels
Author(s) Cai, Ming-hui
Ding, Hua
Tang, Zheng-you
Lee, Hua-ying
Lee, Young-kook
Journal name Steel research international
Volume number 82
Issue number 3
Start page 242
End page 248
Total pages 7
Publisher Wiley - V C H Verlag GmbH & Co. KGaA
Place of publication Weinheim, Germany
Publication date 2011-03
ISSN 0177-4832
Keyword(s) ferrite-bainite dual phase (FBDP) steel
transformation-induced plasticity (TRIP) steel
twin-induced plasticity (TWIP) steel
instantaneous n value
strain hardening rate
Summary Based on n-value differential equation and microstructural observation, strain hardening behaviors of FBDP, TRIP, and TWIP steels during uniaxial tension were investigated. TRIP steel exhibits both superior strength and ductility than FBDP steel, and TWIP steel displays much higher total and uniform elongations in comparison to FBDP and TRIP steels. The instantaneous n values of FBDP and TRIP steels increase at small strains, reach a maximum value, smoothly decrease at higher strains, and then rapidly drop up to the specimen rupture. The strain hardening of TRIP steel persists at higher strains where that of FBDP steel begins to diminish. TWIP steel exhibits gradually increased instantaneous n values over the whole uniform plastic deformation, implying that TWIP steel shows a much larger strain hardening capability than FBDP and TRIP steels.
Language eng
DOI 10.1002/srin.201000132
Field of Research 099999 Engineering not elsewhere classified
Socio Economic Objective 970109 Expanding Knowledge in Engineering
HERDC Research category C1.1 Refereed article in a scholarly journal
Copyright notice ©2011, Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim
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