A novel way to enhance the strength of twinning induced plasticity (TWIP) steels

In this paper, a novel technique to enhance yield strength of twinning induced plasticity (TWIP) steels has been reported by producing a gradient microstructure. Such a microstructure is generated using surface mechanical attrition treatment (SMAT). The SMAT processed steel exhibits a composite micr...

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Bibliographic Details
Published inScripta materialia Vol. 154; pp. 207 - 211
Main Authors Kalsar, Rajib, Suwas, Satyam
Format Journal Article
LanguageEnglish
Published Elsevier Ltd 01.09.2018
Subjects
Composite microstructure
SMAT
Strain hardening
Twins
TWIP steel
Composite microstructure
SMAT
TWIP steel
Twins
Strain hardening
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Summary:In this paper, a novel technique to enhance yield strength of twinning induced plasticity (TWIP) steels has been reported by producing a gradient microstructure. Such a microstructure is generated using surface mechanical attrition treatment (SMAT). The SMAT processed steel exhibits a composite microstructure, comprising of hard phase at the surface and soft phase at the core. The deformed microstructure consists of a graded distribution containing of twins, high density of dislocations and nano-crystalline grains. As a combined effect of the three, a significant improvement in the yield strength is observed without much loss of ductility. [Display omitted]
ISSN:1359-6462
1872-8456
DOI:10.1016/j.scriptamat.2018.05.045