Effect of grain size on dynamic strain aging behavior of C-bearing high Mn twinning-induced plasticity steel

Liu, Huanyou; Liu, Shuai; Wei, Chaozhang; Qian, Lihe; Feng, Yunli; Zhang, Fucheng

doi:10.1016/j.jmrt.2021.11.083

Cited by 15 publications

(3 citation statements)

References 32 publications

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“…The bainite start temperature (B s ) will be significantly decreased because of the segregation or partitioning of C and Mn element after the ferrite transformation, resulting in the formation of bainite [32]. Another most important role of Mn element segregation is to decrease the activity of C element of the austenite, which will lead to the difficulty of C atoms diffusion [33]. Therefore, the non-equilibrium phases, such as granular bainite will be formed after the austenite transformation [7].…”

Section: Discussionmentioning

confidence: 99%

Genetic relationship of microstructure and mechanical properties between ferrite/pearlite steel plate and billet

Feng

Li²,

Li³

et al. 2022

Mater. Res. Express

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This paper proposed the double-pass compression thermal/force simulation experiment to in-situ analyze the phase transformation of continuous casting billet during the controlled rolling and controlled cooling process. The genetic relationship between the central segregation of the billet and solute element distribution of the steel plate, and also the genetic relationship of microstructure and mechanical properties between them were experimentally studied. The results show that the microstructure and mechanical properties between the billet and corresponding batch of steel plate have the genetic relationship, and the link of the relationship is central segregation. The phase transformation of supercooling austenite will be affected by the central segregation of Mn and C elements, and the granular bainite abnormal segregation band is the transformation product of Mn and C element segregation region.

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Section: Discussionmentioning

confidence: 99%

Genetic relationship of microstructure and mechanical properties between ferrite/pearlite steel plate and billet

Feng

Li²,

Li³

et al. 2022

Mater. Res. Express

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“…It is beneficial because the undesirable Portevin-Le Chatelier effect is often observed in high-Mn steels. [42,43] Strain hardening rate values decrease continuously and are equal to true stress values according to the Considere criterion. [6] The wavy flow observed on the hardening curve is not related to the PLC phenomenon.…”

Section: Mechanical Properties and Phase Compositionmentioning

confidence: 99%

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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“…[3,12] The twin acts as obstacles to dislocations slip [6,13,14] and is related to dynamic Hall-Petch effect. [15,16] Although the strain hardening of Twip steel by mechanical twinning is extensively discussed in the literature, Liang et al [17] demonstrated that the twin-induced hardening is comparatively minor when compared to dislocation-induced hardening. The authors indicated that the presence of twins is important to restrict the dislocation slip; however, the low stacking fault energy of Twip steel has a similar effect on dislocation slip.…”

Section: Introductionmentioning

confidence: 99%

Microstructural Parameters of Cold‐Rolled and Annealed Fe–24Mn–3Al–1Ni–2Si–0.06C Steel Obtained by X‐Ray Diffraction

de Lima,

Siqueira,

Freitas Neto

et al. 2023

steel research int.

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Twinning‐induced plasticity (Twip) steel is characterized by the presence of twins and austenite at room temperature. In the present work, Fe‐24Mn‐3Al‐1Ni‐2Si‐0.06C steel is cold‐rolled at 30, 50, and 80%, thickness reduction and subsequently annealed at temperatures between 300 and 1100°C for 15 min. The microstructure, and hardness are analyzed and dislocation density, stacking fault, and twin probability are calculated using the diffraction method based on the intensity of X‐rays generated in a synchrotron facility. The Rietveld analysis using Materials Analysis Using Diffraction (MAUD) software was performed, and Popa Model was employed. Cold rolling increases hardness due to the formation of deformation twins, stacking fault, and dislocation in different degrees depending on the thickness reduction. During annealing, recrystallization influences the parameters obtained by X‐ray diffraction such as stacking fault probability and dislocation density.This article is protected by copyright. All rights reserved.

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Effect of grain size on dynamic strain aging behavior of C-bearing high Mn twinning-induced plasticity steel

Cited by 15 publications

References 32 publications

Genetic relationship of microstructure and mechanical properties between ferrite/pearlite steel plate and billet

Genetic relationship of microstructure and mechanical properties between ferrite/pearlite steel plate and billet

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

Microstructural Parameters of Cold‐Rolled and Annealed Fe–24Mn–3Al–1Ni–2Si–0.06C Steel Obtained by X‐Ray Diffraction

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