An Overview of High Yield Strength Twinning-Induced Plasticity Steels

Twinning-induced plasticity (TWIP) steel is a second-generation advanced high strength steel grade developed for automotive applications. TWIP steels exhibit an excellent combination of strength and ductility, mainly originating from the activation of deformation twinning. However, TWIP steels gener...

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Bibliographic Details
Published in:Metals (Basel ) 2021-01, Vol.11 (1), p.124
Main Authors: Yang, Guanghui, Kim, Jin-Kyung
Format: Article
Language:English
Subjects:
Annealing
Cold
Ductility
Elongation
Grain boundaries
Grain size
High strength steels
Industrial applications
microstructure
Precipitation hardening
Solid phases
Solid solutions
Solution strengthening
Steel
Strain hardening
strengthening mechanism
thermomechanical processing
Thermomechanical treatment
TWIP
TWIP steels
Warm rolling
Warm working
Yield strength
Yield stress
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Summary:Twinning-induced plasticity (TWIP) steel is a second-generation advanced high strength steel grade developed for automotive applications. TWIP steels exhibit an excellent combination of strength and ductility, mainly originating from the activation of deformation twinning. However, TWIP steels generally exhibit a relatively low yield strength (YS), which limits their practical applications. Thus, developing high YS TWIP steels without ductility loss is essential to increase their industrial applications. The present work summarizes and discusses the recent progress in improving the YS of TWIP steels, in terms of precipitation strengthening, solid solution strengthening, thermomechanical processing, and novel processes. Novel processes involving sub-boundary strengthening, multi-phase structure, and gradient structure as well as the control of thermomechanical processing (recovery annealing and warm rolling) and precipitation strengthening were found to result in an excellent combination of YS and total elongation.
ISSN:2075-4701
2075-4701
DOI:10.3390/met11010124