An effective stacking fault energy viewpoint on the formation of extended defects and their contribution to strain hardening in a Fe–Mn–Si–Al twinning-induced plasticity steel

Mahato, B.; Shee, S. K.; Sahu, Trinath; Chowdhury, Sandip Ghosh; Sahu, P. Ch.; Porter, David; Karjalainen, L.P.

doi:10.1016/j.actamat.2014.12.015

Cited by 91 publications

(40 citation statements)

References 52 publications

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“…Mahato et al [37] reported the operation of the same two twinning mechanisms [11,14] but with the predominant activation of primary twinning at 2% tensile strain through the glide of 6〈121〉 ⁄ Shockley partial dislocations.…”

Section: Discussionmentioning

confidence: 99%

Evidencing extrinsic stacking faults in twinning-induced plasticity steel

Casillas

Gazder

Pereloma

et al. 2017

Materials Characterization

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In twinning induced plasticity (TWIP) steel, the question of what leads to the onset of twinning in grains whose (100) orientations are near parallel to the tensile axis at high tensile strains has not been resolved. Using aberration corrected scanning transmission microscopy we present first-hand evidence that extrinsic stacking faults serve as nuclei for twins in (100) grains and also contribute to twin growth in a low carbon TWIP steel uniaxially tensile loaded up to its ultimate tensile strength of ~ 1080 MPa; which corresponds to a tensile true strain of 48%. The results corroborate and validate our previous Schmid factor¿based predictions on the feasibility of twinning nucleation via extrinsic stacking faults in (100) AbstractIn twinning induced plasticity (TWIP) steel, the question of what leads to the onset of twinning in grains whose 〈100〉 orientations are near parallel to the tensile axis at high tensile strains has not been resolved. Using aberration corrected scanning transmission microscopy we present first-hand evidence that extrinsic stacking faults serve as nuclei for twins in 〈100〉 grains and also contribute to twin growth in a low carbon TWIP steel uniaxially tensile loaded up to its ultimate tensile strength of ~1080 MPa; which corresponds to a tensile true strain of 48%. The results corroborate and validate our previous Schmid factor -based predictions on the feasibility of twinning nucleation via extrinsic stacking faults in 〈100〉 grains at high tensile strains.

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Section: Discussionmentioning

confidence: 99%

Evidencing extrinsic stacking faults in twinning-induced plasticity steel

Casillas

Gazder

Pereloma

et al. 2017

Materials Characterization

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“…However, despite some previous efforts to study the twinning nucleation in TWIP steels [13][14][15], several issues still remain unclear. Namely, for an Fe-Mn-Si-Al TWIP steel, the values at room temperature (RT) for the occurrence of pole   twin c  and three-layer mechanisms are very much comparable ~ 200 MPa [15], in spite of that, no evidence could be obtained as to why only the tree-layer mechanism was discriminated by the microstructure.…”

Section: Introductionmentioning

confidence: 95%

“…The common perception for twinning in TWIP steel is that one mechanism is responsible for nucleation and that the growth takes place by secondary mechanisms [13,14]. Mahato et al [15] recently reported that both nucleation and ACCEPTED MANUSCRIPT 2 growth of deformation twinning in a Fe-27Mn-2.5Si-3.5Al TWIP steel is according to the three-layer mechanism [7] and no secondary mechanisms were identified.…”

Section: Introductionmentioning

confidence: 95%

“…Namely, for an Fe-Mn-Si-Al TWIP steel, the values at room temperature (RT) for the occurrence of pole   twin c  and three-layer mechanisms are very much comparable ~ 200 MPa [15], in spite of that, no evidence could be obtained as to why only the tree-layer mechanism was discriminated by the microstructure. Further, it is not irrefutably known on which closed packed plane twinning first nucleates and the nature of dislocations involved in it.…”

Section: Introductionmentioning

confidence: 97%

“…High-resolution TEM studies in TWIP steels involving the characterization of perfect and/or partial dislocations for identification of the twinning mechanism under different loading conditions are scarce and quite divergent views on the twinning mechanisms in these steels are reported in the literature [12][13][14][15].…”

Section: Introductionmentioning

confidence: 99%

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Simultaneous twinning nucleation mechanisms in an Fe–Mn–Si–Al twinning induced plasticity steel

et al. 2017

Self Cite

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Thermodynamic Prediction and Experimental Verification of Transformation‐Induced Plasticity/Twinning‐Induced Plasticity Effects in Advanced Low‐C High‐Mn Steel at Different Deformation Temperatures

Kozłowska,

Opara,

Stawarczyk

et al. 2024

Adv Eng Mater

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The effectiveness of TRIP/TWIP effects in Fe‐0.06C‐26Mn‐3Si‐3Al advanced ferrous alloy was analysed over a wide temperature range of ‐40°C‐200°C. The specific deformation mechanisms in the steel were experimentally investigated and predicted using thermodynamic calculations of stacking fault energy. These predictions were correlated with the microstructure of steel and its mechanical behaviour. The study found that applied thermodynamic models effectively predict the occurrence of TRIP/TWIP effects at different deformation temperatures, aligning well with experimental observations in terms of ε/α' martensite formation, indicative of the TRIP mechanism. Some discrepancies in SFE results were observed at Mn contents significantly higher or lower than the nominal composition of steel.This article is protected by copyright. All rights reserved.

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An effective stacking fault energy viewpoint on the formation of extended defects and their contribution to strain hardening in a Fe–Mn–Si–Al twinning-induced plasticity steel

Cited by 91 publications

References 52 publications

Evidencing extrinsic stacking faults in twinning-induced plasticity steel

Evidencing extrinsic stacking faults in twinning-induced plasticity steel

Simultaneous twinning nucleation mechanisms in an Fe–Mn–Si–Al twinning induced plasticity steel

Thermodynamic Prediction and Experimental Verification of Transformation‐Induced Plasticity/Twinning‐Induced Plasticity Effects in Advanced Low‐C High‐Mn Steel at Different Deformation Temperatures

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