Stacking Fault Energy of Austenite Phase in Medium Manganese Steel

Chandan, Avanish Kumar; Mishra, Gyanaranjan; Mahato, B.; Chowdhury, Sandip Ghosh; Kundu, Saurabh; Chakraborty, Jay

doi:10.1007/s11661-019-05367-x

Cited by 20 publications

(11 citation statements)

References 74 publications

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Section: Effect Of Elements On Phase Transformationsmentioning

confidence: 96%

“…SFE is detrimental to austenite phase transformations during deformation. In general, DIM tends to occur when the SFE is less than 18-20 mJ/m 2 and is entirely inhibited when larger than 18-20 mJ/m 2 [8,29]. The deformation is sufficient for the proliferation of partial dislocations and nucleation sites for α'-martensite when the SFE is low [8,16].…”

Section: Effect Of Elements On Phase Transformationsmentioning

confidence: 97%

“…In general, DIM tends to occur when the SFE is less than 18-20 mJ/m 2 and is entirely inhibited when larger than 18-20 mJ/m 2 [8,29]. The deformation is sufficient for the proliferation of partial dislocations and nucleation sites for α'-martensite when the SFE is low [8,16]. In contrast, a higher SFE in the austenite prefers to generate intragranular twins during deformation [30,31].…”

Section: Effect Of Elements On Phase Transformationsmentioning

confidence: 97%

“…Several works have reported that the low SFE (<20 mJ/m 2 ) favours the phase transformation from austenitic to martensitic (ε-or α'-martensitic transformations). Moderate SFE (20-45 mJ/m 2 ) yield deformations through twinning mechanisms, which leads to twinning-induced 2 of 15 plasticity (TWIP) [6][7][8]. Zhang et al [9] applied the Mossbauer spectrum method and found that when there are high contents of carbon and carbide-forming elements, a larger driving force is needed for DIM.…”

Section: Introductionmentioning

confidence: 99%

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The Effect of Drawing Deformation Rate Induced Inhomogeneous Local Distortion on Phase Transformation of 304H Stainless Wire

Xu¹,

Peng

Zhu³

et al. 2020

Metals

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The micro/macro magnetic properties, local element distribution, martensite transformation, and mechanical properties of 304H stainless wires are determined for two cold drawing chains. Finite element simulations are used to analyse the local strain and heat generation. The results show that there is obvious inhomogeneity in the magnetic properties, strain/stress relationship, and strain-induced heat within the drawn wires. Comparing wires with the same total strain, a larger area reduction of previous drawing processes contributes to a higher volume of the martensite phase, while a smaller area reduction of the first process results in an inhibited phase transformation. A higher single strain in the first drawing process leads to additional heat generation at the subsurface of the wire, which would eventually retard the martensite transformation. The inhomogeneous deformation-induced differences in the grain size affect the stability of austenite and transform the final martensite.

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Section: Effect Of Elements On Phase Transformationsmentioning

confidence: 96%

Section: Effect Of Elements On Phase Transformationsmentioning

confidence: 97%

Section: Effect Of Elements On Phase Transformationsmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

The Effect of Drawing Deformation Rate Induced Inhomogeneous Local Distortion on Phase Transformation of 304H Stainless Wire

Xu¹,

Peng

Zhu³

et al. 2020

Metals

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show abstract

“…However, the SFE measurement of the austenitic phase in medium-Mn steels is more difficult due to their multiphase microstructure and numerous factors affecting the SFE. Chandan et al [38] reported that SFE of retained austenite in a 0.18C-4.7Mn-0.8Si-0.4Al steel varies from 9 to 20 mJ/ Fig. 2 Scanning electron microscope (SEM) micrograph of investigated steel at the initial state.…”

Section: Microstructure and Mechanical Stability Of Retained Austenitementioning

confidence: 99%

Mechanical stability of retained austenite in aluminum-containing medium-Mn steel deformed at different temperatures

Kozłowska

Radwański

Matus

et al. 2021

Archiv.Civ.Mech.Eng

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The thermal and mechanical stabilities of retained austenite in aluminum-containing medium-Mn 0.16C–4.7Mn–1.6Al–0.2Si sheet steel were investigated. The strain-induced martensitic transformation in Mn TRIP steel was studied at different temperatures. Static tensile tests were carried out at the temperature ranging from − 60 to 200 °C. The tests allowed to study the influence of the temperature on austenite-to-martensite transformation kinetics. The interrupted tensile tests and corresponding X-ray measurements of retained austenite amount were performed to determine the mechanical stability of retained austenite using the Sugimoto model. The microstructure changes were investigated using scanning electron microscopy (SEM), electron backscatter diffraction (EBSD), X-ray diffraction (XRD) and transmission electron microscopy (TEM) techniques. Observed results reflected the effects of deformation temperature on the mechanical stability of retained austenite and the corresponding response of this phase to martensitic transformation. It was found that an increase in the deformation temperature resulted in the reduced intensity of the TRIP effect due to the higher mechanical stability of retained austenite. At the highest deformation temperature (200 °C), the evidence of thermally activated processes affecting the mechanical behavior was identified.

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A Systematic Review of Medium‐Mn Steels with an Assessment of Fatigue Behavior

Kumar,

Sen,

Bandyopadhyay

2023

steel research int.

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Deformation‐induced mechanisms, namely, transformation‐induced plasticity (TRIP) and twinning‐induced plasticity (TWIP), are primarily responsible for improved tensile properties in medium‐Mn steels. Additionally, lower density and processing costs make these steels useful in various industries, particularly the automotive industry, which mandates a good understanding of underlying processing–microstructure–property correlations. Therefore, the present study reviews different thermomechanical processes and corresponding microstructural evolutions, followed by mechanical properties. In addition, an assessment of the fatigue behavior of medium‐Mn steels based on duplex or multiphase microstructure and associated mechanisms has been presented. In high‐cycle fatigue (HCF) loading, strain‐induced martensite formation through TRIP at the crack tip is a barrier to dislocation motion. It deviates the crack propagation path to adjacent phases, which results in higher fatigue life. On the other hand, relatively high martensite boundaries initiate microcracks and accelerate crack propagation, resulting in lower life in low‐cycle fatigue (LCF). However, the TWIP mechanism prevents cyclic softening and promotes cyclic saturation, extending fatigue life. The compositions of medium‐Mn steel for enhanced fatigue resistance have been proposed. To that end, it is hypothesized that the TRIP + TWIP mechanisms lead to exceptional LCF performance. Further, microalloyed medium‐Mn steels are expected to exhibit improved LCF and HCF behavior.

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Stacking Fault Energy of Austenite Phase in Medium Manganese Steel

Cited by 20 publications

References 74 publications

The Effect of Drawing Deformation Rate Induced Inhomogeneous Local Distortion on Phase Transformation of 304H Stainless Wire

The Effect of Drawing Deformation Rate Induced Inhomogeneous Local Distortion on Phase Transformation of 304H Stainless Wire

Mechanical stability of retained austenite in aluminum-containing medium-Mn steel deformed at different temperatures

A Systematic Review of Medium‐Mn Steels with an Assessment of Fatigue Behavior

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