On deformation twinning in a 17.5% Mn–TWIP steel: A physically based phenomenological model

Soulami, Ayoub; Choi, Kyoo Sil; Shen, Y.F.; Liu, Wenning N.; X, Sun; Khaleel, Mohammad A.

doi:10.1016/j.msea.2010.10.031

Cited by 87 publications

(47 citation statements)

References 28 publications

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“…Barbier et al [7] estimated a 9% twin volume fraction in a Fe-22Mn-0.6C TWIP steel after 55% tensile strain. A twin volume fraction of ~9% was also measured using combined SEM and TEM -based observations in a Fe-Mn TWIP alloy after 50% tensile strain [55].…”

Section: The Vpsc Model Predictionsmentioning

confidence: 99%

Microstructure and texture evolution in a twinning-induced-plasticity steel during uniaxial tension

2013

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. (2013). Microstructure and texture evolution in a twinning-induced-plasticity steel during uniaxial tension. Acta Materialia, 61 (7), 2671-2691.Microstructure and texture evolution in a twinning-induced-plasticity steel during uniaxial tension AbstractA combination of electron back-scattering diffraction and X-ray diffraction was used to track the evolution of the microstructure and texture of a fully recrystallized Fe-24 Mn-3 Al-2 Si-1 Ni-0.06 C twinning-inducedplasticity steel during interrupted uniaxial tensile testing. Texture measurements returned the characteristic double fibre texture for face-centred cubic materials, with a relatively stronger 〈1 1 1〉 and a weaker 〈1 0 0〉 partial fibre parallel to the tensile axis. The interaction with the stable 〈1 1 1〉 oriented grains results in preferential plastic flow in the unstable 〈1 1 0〉 oriented grains. Consequently, the grains oriented along the 〈1 1 0〉 and 〈1 0 0〉 fibres record the highest and lowest values of intragranular local misorientation, respectively. The viscoplastic self-consistent model was used to simulate the macroscopic stress-strain response as well as track the evolution of bulk crystallographic texture by detailing the contributions of perfect and/or partial slip, twinning and latent hardening. The simulations revealed the dominant role of perfect slip and the limited volume effect of twinning on the texture development. The effects of initial orientation and grain interaction on the overall orientation stability during uniaxial tension showed that while the 〈1 0 0〉 fibre remains stable and does not affect the unstable orientations along the 〈1 1 0〉 fibre, the orientations along the stable 〈1 1 1〉 fibre strongly affect the unstable 〈1 1 0〉 orientations. on the overall orientation stability during uniaxial tension showed that while the 100  fibre remains stable and does not affect the unstable orientations along the 110  fibre, the orientations along the stable 111  fibre strongly affect the unstable 110  orientations.

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Section: The Vpsc Model Predictionsmentioning

confidence: 99%

Microstructure and texture evolution in a twinning-induced-plasticity steel during uniaxial tension

2013

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“…Soulami et al [7] recently also proposed a model to predict the evolution of twin volume fraction, which is similar to the models used for the martensitic transformation in TRIP steels. Table 1.…”

Section: Modelmentioning

confidence: 99%

“…It has been proposed that deformation twins increase the work hardening rate by acting as planar obstacles for gliding dislocations. During the last ten years, physical based models have been developed specifically for high manganese TWIP steels [3][4][5][6][7] to: -compute the stacking fault energy as a function of the chemical composition, -describe the interaction between dislocation glide and deformation twinning, -predict the resulting high work hardening rate due to dynamic microstructure refinement (dynamic HallPetch effect).…”

Section: Introductionmentioning

confidence: 99%

Modelling the effect of carbon on deformation behaviour of twinning induced plasticity steels

et al. 2011

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In this article, a physical model describing the deformation behaviour of Twinning Induced Plasticity (TWIP) steels has been extended to include the effect of carbon content. The experimental validation and the analysis show that carbon mainly controls the maximum number of dislocations piled up at the twin boundary, resulting in the increase of back-stresses (i.e. kinematic hardening) and therefore the work hardening rate. This explanation seems to be in agreement with recent TEM observations.

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“…High-manganese austenitic TWIP (Twinning-Induced Plasticity) steels exhibit an exceptional combination of high strength and outstanding ductility [1][2][3]. This optimal combination is especially attractive for automotive components such as structural and stabilizing parts.…”

Section: Introductionmentioning

confidence: 99%

Equal channel angular pressing of a TWIP steel: microstructure and mechanical response

et al. 2017

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A Fe-20.1Mn-1.23Si-1.72Al-0.5C TWIP steel with ultra-fine grain structure was successfully processed through Equal Channel Angular Pressing (ECAP) at warm temperature up to four passes following the BC route. The microstructure evolution was characterized by Electron Back Scattered Diffraction (EBSD) to obtain the grain maps, which revealed an obvious reduction of grain size, as well as a decrease of the twin fraction, with increasing number of ECAP passes. The texture evolution during ECAP was analyzed by Orientation Distribution Function (ODF). The results show that the annealed material presents Brass (B) as dominant component. After ECAP, the one pass sample presents A1 * and A2 * as the strongest components, while the two passes and four passes samples change gradually towardcomponents. TEM analysis shows that all samples present twins. The twin thickness is reduced with increasing the number of ECAP passes. Nano-twins, as a result of secondary twinning, are also observed in the one and two passes samples. In the four passes sample the microstructure is extensively refined by the joint action of ultra-fine subgrains, grains and twins. The mechanical behavior was studied by tensile samples and it was found that the yield strength and the ultimate tensile strength are significantly enhanced at increasing number of ECAP passes. Although the ductility and strain hardening capability are reduced with ECAP process, the present TWIP steel shows significant uniform deformation periods with positive work-hardening rates.

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On deformation twinning in a 17.5% Mn–TWIP steel: A physically based phenomenological model

Cited by 87 publications

References 28 publications

Microstructure and texture evolution in a twinning-induced-plasticity steel during uniaxial tension

Microstructure and texture evolution in a twinning-induced-plasticity steel during uniaxial tension

Modelling the effect of carbon on deformation behaviour of twinning induced plasticity steels

Equal channel angular pressing of a TWIP steel: microstructure and mechanical response

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