Partially-recrystallized, Nb-alloyed TWIP steels with a superior strength-ductility balance

Gwon, Hojun; Kim, Jin‐Kyung; Bian, Jian; Mohrbacher, Hardy; Song, Taejin; Kim, Sung Kyu; Cooman, Bruno C. De

doi:10.1016/j.msea.2017.11.012

Cited by 31 publications

(20 citation statements)

References 26 publications

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“…In contrast, Figure 2b includes the recrystallized TWIP steel specimen showing a homogeneous γ-austenite monophasic microstructure with equiaxial grains and the presence of annealing twin formation on individual grains during recrystallization and grain growth processes. In addition to the annealing twin formation, an increase in the grain size of the recrystallized TWIP samples is seen, similar to what it can be seen in the literature at that temperature range [35,36]. While the recrystallization decreases the dislocation density, the twin density is not affected as much, most of the twins remaining previously formed [35].…”

Section: Resultssupporting

confidence: 86%

“…In addition to the annealing twin formation, an increase in the grain size of the recrystallized TWIP samples is seen, similar to what it can be seen in the literature at that temperature range [35,36]. While the recrystallization decreases the dislocation density, the twin density is not affected as much, most of the twins remaining previously formed [35].…”

Section: Resultssupporting

confidence: 86%

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Effect of Thermo-Mechanical Processing on the Corrosion Behavior of Fe−30Mn−5Al−0.5C TWIP Steel

et al. 2020

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Electrochemical corrosion of thermo-mechanically processed (TMP) and recrystallized Fe−30Mn−5Al−0.5C twinning-induced plasticity (TWIP) steels containing 30 wt.% Mn was studied in a 1.0 wt.% NaCl electrolyte solution. The alkaline nature of the corrosion products containing manganese oxide (MnO) increases the dissolution kinetics of the TWIP steel in acid media, obtaining Mn2+ cations in solution, and producing the hydrogen evolution reaction (HER). X-ray photoelectron spectroscopy (XPS) surface analysis revealed an increased Al2O3 content of 91% in the passive layer of the recrystallized TWIP steel specimen, while in contrast only a 43% Al2O3 was found on the TMP specimen. Additionally, the chemical composition of the surface oxide layer as well as the TWIP alloy microstructure was analyzed by optical microscopy (OM) and scanning electron microscopy (SEM). The results indicate an enhanced corrosion attack for the TMP high-Mn TWIP steel.

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Section: Resultssupporting

confidence: 86%

Section: Resultssupporting

confidence: 86%

Effect of Thermo-Mechanical Processing on the Corrosion Behavior of Fe−30Mn−5Al−0.5C TWIP Steel

et al. 2020

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“…austenitic high-manganese steels is limited due to their low yield strength compared to other structural materials. Therefore, many investigations have been performed to improve the yield strength of austenitic high-manganese steels by the method of microalloying, adding RE modifier or ceramic particles via the strengthening mechanisms of solid solution strengthening, precipitation strengthening, and grain refinement [7][8][9][10][11][12] .…”

Section: Tin/γ-fe Interface Orientation Relationship and Formation Mechanism Of Tin Precipitates In Mn18cr2 Steelmentioning

confidence: 99%

TiN/γ-Fe interface orientation relationship and formation mechanism of TiN precipitates in Mn18Cr2 steel

Wang

Xie

et al. 2021

China Foundry

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Austenitic high-manganese steel (≥15wt.% Mn) has a good combination of high strength and high ductility due to its capability of obtaining single austenitic structure through solid solution. Therefore, the austenitic high-manganese steel has attracted much attention in many structural applications exposed to heavy loads, such as the shovel tooth of an excavator, the rolling mortar wall of a cone crusher and the lining plate of a ball mill [1][2][3][4][5][6] . However, the application of

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“…As reported in previous studies, a variety of strengthening methods [1][2][3][4][5][6][7][8][9][10][11][12] (such as solid solution strengthening, precipitation strengthening and grain refinement) are considered to increase the yield strength of austenitic steels, among which grain refinement can effectively increase the yield strength of austenitic steels. The grain size of austenitic steel has an influence on the deformation behaviour.…”

Section: Introductionmentioning

confidence: 99%

Tensile mechanical properties, deformation mechanisms, fatigue behaviour and fatigue life of 316H austenitic stainless steel: Effects of grain size

Zhao

et al. 2020

Fatigue Fract Eng Mat Struct

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To explore the effect of grain size on the tensile behaviour, symmetrical strain control fatigue behaviour and ratcheting fatigue behaviour of the new austenitic steel 316H, a series of tensile tests, symmetrical strain control fatigue tests and ratcheting fatigue tests were conducted at 25°C within an average grain size range from 14 to 122 μm. The average dislocation free path, forest dislocation density and mobile dislocation density of 316H steel with different grain sizes under tension were obtained. Moreover, the decrease of grain size led to saturation of mobile dislocations at lower strains. The decrease of grain size led to the increase of the cyclic stress and affected softening and secondary hardening process. In addition, under the same stress control conditions, the reduction in grain size caused a reduction in ratcheting strain under the same cycle. The grain refinement of 316H steel contributed to the improvement of ratcheting fatigue life.

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Partially-recrystallized, Nb-alloyed TWIP steels with a superior strength-ductility balance

Cited by 31 publications

References 26 publications

Effect of Thermo-Mechanical Processing on the Corrosion Behavior of Fe−30Mn−5Al−0.5C TWIP Steel

Effect of Thermo-Mechanical Processing on the Corrosion Behavior of Fe−30Mn−5Al−0.5C TWIP Steel

TiN/γ-Fe interface orientation relationship and formation mechanism of TiN precipitates in Mn18Cr2 steel

Tensile mechanical properties, deformation mechanisms, fatigue behaviour and fatigue life of 316H austenitic stainless steel: Effects of grain size

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