Strain Hardening Behavior of High Performance FBDP, TRIP and TWIP Steels

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...

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Published in:Steel research international 2011-03, Vol.82 (3), p.242-248
Main Authors: Cai, Ming-hui, Ding, Hua, Tang, Zheng-you, Lee, Hua-ying, Lee, Young-kook
Format: Article
Language:English
Subjects:
Differential equations
Displays
Elongation
Ferrite-bainite dual phase (FBDP) steel
instantaneous n value
Steels
Strain
Strain hardening
strain hardening rate
transformation-induced plasticity (TRIP) steel
TRIP steels
twin-induced plasticity (TWIP) steel
TWIP steels
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cited_by cdi_FETCH-LOGICAL-c4262-a755cd13b5b0b795ec831842b98f992dca5436d11bb5a8248d42789533eb4c733
cites cdi_FETCH-LOGICAL-c4262-a755cd13b5b0b795ec831842b98f992dca5436d11bb5a8248d42789533eb4c733
container_end_page 248
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container_title Steel research international
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creator Cai, Ming-hui
Ding, Hua
Tang, Zheng-you
Lee, Hua-ying
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description 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.
doi_str_mv 10.1002/srin.201000132
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source Wiley-Blackwell Read & Publish Collection
subjects Differential equations
Displays
Elongation
Ferrite-bainite dual phase (FBDP) steel
instantaneous n value
Steels
Strain
Strain hardening
strain hardening rate
transformation-induced plasticity (TRIP) steel
TRIP steels
twin-induced plasticity (TWIP) steel
TWIP steels
title Strain Hardening Behavior of High Performance FBDP, TRIP and TWIP Steels
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