Advanced Thermomechanical Processing for a High-Mn Austenitic Steel

Kusakin, Pavel; Tsuzaki, Kaneaki; Molodov, Dmitri A.; Kaibyshev, Rustam; Belyakov, Andrey

doi:10.1007/s11661-016-3794-y

Cited by 17 publications

(16 citation statements)

References 26 publications

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“…The values of σ 0 = 160 MPa and k y = 355 MPa µm 0.5 are obtained in the present study. Note here, almost the same σ 0 and k y have been reported in other papers on austenitic steels [13,[24][25][26].…”

Section: Mechanical Propertiessupporting

confidence: 89%

“…The range of annealing temperatures and the annealing time were selected to cover the operation of various restoration mechanisms including recovery and recrystallization and, therefore, to obtain variety of annealed microstructures-i.e., recovered, partially recrystallized, and fully recrystallized [13,14]. The effect of annealing temperature on the hardness and fractional softening of the present high-Mn steel subjected to cold rolling to various total strains is shown in Figure 3.…”

Section: Annealing Behaviormentioning

confidence: 95%

“…On the other hand, low SFE hampers any dislocation rearrangements and, thus, slows down the dislocation recovery processes. Therefore, high-Mn austenitic steels are hardly susceptible to dynamic recovery under warm rolling conditions, and the work hardened microstructures remain almost unchanged up to high temperatures sufficient for recrystallization development [13,14].…”

Section: Introductionmentioning

confidence: 99%

“…High-Mn austenitic steels exhibit significant strain hardening owing to increasing the dislocation density during cold-to-warm working [13][14][15]. The dislocation strengthening leads to remarkable increase in both the yield strength and the ultimate tensile strength [15].…”

Section: Introductionmentioning

confidence: 99%

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Microstructure and Mechanical Properties of a High-Mn TWIP Steel Subjected to Cold Rolling and Annealing

Kalinenko

Kusakin

Belyakov

et al. 2017

Metals

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Abstract:The structure-property relationship was studied in an Fe-18Mn-0.6C-1.5Al steel subjected to cold rolling to various total reductions from 20% to 80% and subsequent annealing for 30 min at temperatures of 673 to 973 K. The cold rolling resulted in significant strengthening of the steel. The hardness increased from 1900 to almost 6000 MPa after rolling reduction of 80%. Recovery of cold worked microstructure developed during annealing at temperatures of 673 and 773 K, resulting in slight softening, which did not exceed 0.2. On the other hand, static recrystallization readily developed in the cold rolled samples with total reductions above 20% during annealing at 873 and 973 K, leading to fractional softening of about 0.8. The recrystallized grain size depended on annealing temperature and rolling reduction; namely, it decreased with a decrease in the temperature and an increase in the rolling reduction. The mean recrystallized grain size from approximately 1 to 8 µm could be developed depending on the rolling/annealing conditions. The recovered and fine grained recrystallized steel samples were characterized by improved strength properties. The yield strength of the recovered, recrystallized, and partially recrystallized steel samples could be expressed by a unique relationship taking into account the fractional contributions from dislocation and grain size strengthening into overall strength.

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Section: Mechanical Propertiessupporting

confidence: 89%

Section: Annealing Behaviormentioning

confidence: 95%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Microstructure and Mechanical Properties of a High-Mn TWIP Steel Subjected to Cold Rolling and Annealing

Kalinenko

Kusakin

Belyakov

et al. 2017

Metals

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“…The important structural parameters affecting the mechanical properties of steels and alloys are the grain size and the dislocation density [4]. Regarding high-Mn steels, both a decrease in the grain size by static recrystallization and an increase in the dislocation density by cold to warm working result in significant strengthening, although plasticity degrades remarkably [5,6]. An appropriate strength-ductility combination in the steels can be obtained owing to desired structural parameters, which are directly controlled by * corresponding author; e-mail: belyakov@bsu.edu.ru the conditions of warm to hot working [7].…”

Section: Introductionmentioning

confidence: 99%

Deformation Mechanisms Operating in TWIP/TRIP Steels Processed by Warm to Hot Working

2018

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The mechanical properties of medium to high-Mn austenitic TWIP/TRIP steels subjected to warm to hot working were studied. The steel samples were processed by plate rolling at various temperatures ranging from 500 • C to 1150 • C. The deformation microstructures depend significantly on the rolling temperature. The discontinuous dynamic recrystallization readily developed during hot rolling at temperatures of T ≥ 800 • C, whereas the work hardened microstructures with high dislocation densities evolved by warm rolling at temperatures below 800 • C. The warm to hot rolling strengthened the steels remarkably. The ultimate tensile strength in the range of 750-1250 MPa and the corresponding yield strength of 300-900 MPa could be obtained by processing at designated temperature.

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Microstructure and Mechanical Properties of Austenitic Stainless Steels after Dynamic and Post‐Dynamic Recrystallization Treatment

2018

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The effects of dynamic and post-dynamic recrystallization (DRX and post-DRX) on the microstructure and mechanical properties of austenitic stainless steels are critically reviewed. Particularly, the paper is focused on the grain refinement and strengthening by large strain deformation including severe plastic deformation conditions. The DRX and post-DRX microstructures are considered with close relation to the operative recrystallization mechanisms. Specific emphasis is placed upon two recrystallization mechanisms, that is, discontinuous and continuous, and their dependence on the deformation/annealing conditions. The relationships between DRX microstructures and processing conditions are summarized and their effect on post-DRX behavior is clarified. The structural strengthening mechanisms including the grain size and the dislocation density are elaborated.

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Advanced Thermomechanical Processing for a High-Mn Austenitic Steel

Cited by 17 publications

References 26 publications

Microstructure and Mechanical Properties of a High-Mn TWIP Steel Subjected to Cold Rolling and Annealing

Microstructure and Mechanical Properties of a High-Mn TWIP Steel Subjected to Cold Rolling and Annealing

Deformation Mechanisms Operating in TWIP/TRIP Steels Processed by Warm to Hot Working

Microstructure and Mechanical Properties of Austenitic Stainless Steels after Dynamic and Post‐Dynamic Recrystallization Treatment

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