Effect of Deformation Temperature on Mechanical Properties and Deformation Mechanisms of Cold-Rolled Low C High Mn TRIP/TWIP Steel

Tang, Zihan; Huang, Jianguo; Ding, Hua; Cai, Zhiping; Zhang, Dongmei; Misra, Devesh

doi:10.3390/met8070476

Cited by 16 publications

(10 citation statements)

References 34 publications

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“…However, most steels show an inverse tendency in strength behavior related to the thermal softening effect. It was reported by Tang et al [45] and Madivala et al [46]. Moreover, it is interesting that the value of TEl is similar to the specimen deformed at room temperature.…”

Section: Mechanical Propertiessupporting

confidence: 53%

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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Section: Mechanical Propertiessupporting

confidence: 53%

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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“…For decades, high manganese steel has been studied for the application of automotive frame due to its excellent strength-ductility combination from the early stage of development [1][2][3][4][5][6][7]. Recently high manganese steel was tried to be applied for slurry pipes due to its excellent wear resistance.…”

Section: Introductionmentioning

confidence: 99%

Microstructure and Mechanical Properties of Gas Tungsten Arc Welded High Manganese Steel Sheet

Park

et al. 2019

Metals

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This study investigated microstructure and mechanical properties of high manganese steel sheet fabricated by gas tungsten arc welding (GTAW). The weld zone showed longitudinal coarse grains due to the coalescence of columnar dendrites grown into the direction of heat source, and the HAZ showed equiaxed coarser grains than the base metal due to the thermal effect of GTAW process. Mn segregation occurred in the inter-dendritic regions of the weld zone and Mn depletion thus occurred in the weld matrix. Although the stacking fault energy is expected to be lowered due to the Mn depletion, no noticeable change in the initial phase and deformation mechanism was found in the weld matrix. Lower hardness and strength were shown in the weld zone than the base metal, which was caused by the coarser grain size. The negative strain rate sensitivity observed in the weld zone and the base metal is considered to have originated from the negative strain rate dependency of twinning nucleation stress.

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“…It is possible to observe a high dislocation density arranged in a cells configuration. Since this alloy has a relatively low stacking fault energy, it was expected that at early deformation stages it would form microbands of deformation in which the dislocations should show a predominantly planar slip [8,34]. Later, at higher deformation levels, the formation of the dislocation cells or twins would be expected [15].…”

Section: Tensile Testsmentioning

confidence: 99%

Influence of Al Additions on the Microstructure and Mechanical Properties of a C and Si-Free High-Mn Steel

Otani

Vidilli

Coury

et al. 2020

Metals

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The lightweight Fe–Mn–Al–C steels have drawn considerable attention from the literature due to their outstanding combination of high ductility and specific strength. Although the mechanical behavior of such steels has been extensively studied, the effect of Al when no C and Si are added has not been investigated in detail. For this reason, the main objective of this work was to study the microstructural evolution and mechanical behavior of carbon and silicon-free high-Mn steels with different aluminum contents. Alloys with 0, 2.5, and 5 wt. % Al were processed by spray forming to ensure high homogeneity and a fully austenitic microstructure. Cold rolling and annealing were performed to obtain a fine grain-sized material. The mechanical properties were similar regardless of the Al content, especially the work hardening rate. Deformation twinning and strain-induced phase transformation were not observed for any of the compositions. Additionally, a dislocation cell-like structure was observed for all of the alloys indicating that the Al additions did not change considerably the dislocation behavior, even though it considerably changed the estimated Stacking Fault Energy (SFE) value for all the alloys studied in this work.

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Effect of Deformation Temperature on Mechanical Properties and Deformation Mechanisms of Cold-Rolled Low C High Mn TRIP/TWIP Steel

Cited by 16 publications

References 34 publications

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

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

Microstructure and Mechanical Properties of Gas Tungsten Arc Welded High Manganese Steel Sheet

Influence of Al Additions on the Microstructure and Mechanical Properties of a C and Si-Free High-Mn Steel

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