Heat treatment and thermal stability of FeMnAlC alloys

Kalashnikov, I. S.; Acselrad, O.; Shalkevich, Andrey; Chumakova, L. D.; Pereira, L.C.

doi:10.1016/s0924-0136(02)00937-8

Cited by 47 publications

(31 citation statements)

References 18 publications

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“…[1][2][3][4][5][6][7][8][9][10][11] In these studies, when an alloy with a chemical composition in the range of Fe-(28-34.3) mass%Mn-(7.8-11.8) mass%Al-(0.74-1.3) mass%C (Fe-(25-30.1) at%Mn-(14.2-20.9) at%Al-(3.1-5.2) at%C) was solution heat-treated in the single austenite () phase (disordered facecentered cubic (fcc)) region and then quenched rapidly, the microstructure of the alloy was single-phase . [1][2][3][4][5][6][7][8][9][10][11] When the as-quenched alloy was aged at 500-550 C for moderate periods of time, fine (Fe,Mn) 3 AlC x particles (k 0 particles) began to precipitate coherently within the matrix. [1][2][3][4][5][6][7][8][9][10][11] The (Fe,Mn) 3 AlC x particle has an ordered fcc crystal structure which belongs to the L 0 1 2 type.…”

Section: Introductionmentioning

confidence: 99%

“…[1][2][3][4][5][6][7][8][9][10][11] When the as-quenched alloy was aged at 500-550 C for moderate periods of time, fine (Fe,Mn) 3 AlC x particles (k 0 particles) began to precipitate coherently within the matrix. [1][2][3][4][5][6][7][8][9][10][11] The (Fe,Mn) 3 AlC x particle has an ordered fcc crystal structure which belongs to the L 0 1 2 type. [3][4][5][6][7][8] Recently, we performed transmission electron microscopy observations on the phase transformations of an Fe-30 mass%Mn-9 mass%Al-2 mass%C (Fe-26 at%Mn-16 at%Al-8 at%C) alloy.…”

Section: Introductionmentioning

confidence: 99%

“…[1][2][3][4][5][6][7][8][9][10][11] The (Fe,Mn) 3 AlC x particle has an ordered fcc crystal structure which belongs to the L 0 1 2 type. [3][4][5][6][7][8] Recently, we performed transmission electron microscopy observations on the phase transformations of an Fe-30 mass%Mn-9 mass%Al-2 mass%C (Fe-26 at%Mn-16 at%Al-8 at%C) alloy.…”

Section: Introductionmentioning

confidence: 99%

“…This is quite different from that observed in the austenitic FeMnAlC alloys with 3:1 C 5:2 at%, in which fine k 0 particles could only be observed in aged alloys. [3][4][5][6][7][8][9][10][11] This finding suggests that the carbon content may play an important role in the formation of fine k 0 particles within the matrix during quenching. However, to date, the reason why adding a greater amount of carbon could lead to this result is unclear.…”

Section: Introductionmentioning

confidence: 99%

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Effect of Carbon on Spinodal Decomposition in Fe-26Mn-20Al-C Alloys

et al. 2011

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The supersaturated austenite () phase decomposed into fine C-rich ordered k 0 particles and C-depleted 0 phase during quenching in alloys with 5:5 C 8:0 at%. The misfit between k 0 particles and 0 phase decreased with increasing carbon content. The strain energy increased dramatically as carbon content approached slightly below 5.5 at%. Undercooling may be insufficient to overcome the strain energy effects, thus leading to the absence of spinodal decomposition and k 0 particles in the present and prior austenitic FeMnAlC alloys with 3:1 C 5:2 at% under the as-quenched condition. Additionally, both the amount of ordered k 0 particles and the carbon concentration in the k 0 particles increased with increasing carbon content of the alloy. These results revealed that a higher degree of carbon supersaturation in the initial phase might promote a tendency toward C-rich k 0 particle formation during quenching.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Effect of Carbon on Spinodal Decomposition in Fe-26Mn-20Al-C Alloys

et al. 2011

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“…[1][2][3][4][5][6][7][8] These studies have shown that in the as-quenched condition, the microstructure of the alloy with a chemical composition in the range of Fe-(26-34)%Mn-(6-11)%Al-(0.54-1.3)%C was single-phase austenite (). After being aged at 500-750 C for moderate times, fine and coarse (Fe,Mn) 3 AlC carbides ( carbides) having an L'1 2 -type structure were observed to precipitate coherently within the austenite matrix and also heterogeneously on the austenite grain boundaries, respectively.…”

Section: Introductionmentioning

confidence: 99%

Grain Boundary Precipitation in Fe-30Mn-9Al-5Cr-0.7C Alloy

et al. 2008

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The as-quenched microstructure of the Fe-30%Mn-9%Al-5%Cr-0.7%C (in mass%) alloy was single-phase austenite. When the as-quenched alloy was aged at 550 C-750 C, fine (Fe,Mn) 3 AlC carbides were formed within the austenite matrix. In addition, as the aging temperature increased, a M 7 C 3 carbide + D0 3 ! M 7 C 3 carbide + B2 ! M 7 C 3 carbide + (ferrite) phase transition had occurred on the grain boundaries. This grain boundary precipitation behavior has never before been observed in FeMnAlC and FeMnAlCrC alloy systems.

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Production of Ultrahigh‐Strength and High‐Ductility TWIP Steel by Precipitation of β‐Mn during Large Deformation during Warm‐Rolling

Cao

Chen

Xie

et al. 2023

steel research int.

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Herein, twinning‐induced plasticity (TWIP) steel having large deformation is rolled at different rolling temperatures to improve the tensile strength and retain a certain plastic deformation capacity. Based on X‐ray diffraction and transmission electron microscope analysis, β‐Mn is found as the precipitate at the grain boundary during the warm‐rolling process (500–650 °C). To investigate the impact of β‐Mn on the tensile properties, the microstructure of the TWIP steel rolled at the temperature value of 600 °C is observed by carrying out electron backscatter diffraction and scanning electron microscope measurements. The intergranular β‐Mn phase can help the material to accumulate geometric necessary dislocation (GND) density, inhibit crack propagation, as well as improve the strength and plasticity of the material. Once TWIP steel is warm‐rolled above the temperature value of 600 °C, and serrated flow appears in the tensile process, which is also conducive to improving the material properties.

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Heat treatment and thermal stability of FeMnAlC alloys

Cited by 47 publications

References 18 publications

Effect of Carbon on Spinodal Decomposition in Fe-26Mn-20Al-C Alloys

Effect of Carbon on Spinodal Decomposition in Fe-26Mn-20Al-C Alloys

Grain Boundary Precipitation in Fe-30Mn-9Al-5Cr-0.7C Alloy

Production of Ultrahigh‐Strength and High‐Ductility TWIP Steel by Precipitation of β‐Mn during Large Deformation during Warm‐Rolling

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