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Molecular dynamics simulation of the effect of dislocations on the martensitic transformations in a two-dimensional model. / Dmitriev, S.V.; Kashchenko, M.P.; Baimova, J.A.; Babicheva, R.I.; Gunderov, D.V. ; Pushin, V.G. .

в: Letters on Materials, Том 7, № 4, 2018, стр. 442-446.

Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование

Harvard

Dmitriev, SV, Kashchenko, MP, Baimova, JA, Babicheva, RI, Gunderov, DV & Pushin, VG 2018, 'Molecular dynamics simulation of the effect of dislocations on the martensitic transformations in a two-dimensional model', Letters on Materials, Том. 7, № 4, стр. 442-446.

APA

Dmitriev, S. V., Kashchenko, M. P., Baimova, J. A., Babicheva, R. I., Gunderov, D. V., & Pushin, V. G. (2018). Molecular dynamics simulation of the effect of dislocations on the martensitic transformations in a two-dimensional model. Letters on Materials, 7(4), 442-446.

Vancouver

Dmitriev SV, Kashchenko MP, Baimova JA, Babicheva RI, Gunderov DV, Pushin VG. Molecular dynamics simulation of the effect of dislocations on the martensitic transformations in a two-dimensional model. Letters on Materials. 2018;7(4):442-446.

Author

Dmitriev, S.V. ; Kashchenko, M.P. ; Baimova, J.A. ; Babicheva, R.I. ; Gunderov, D.V. ; Pushin, V.G. . / Molecular dynamics simulation of the effect of dislocations on the martensitic transformations in a two-dimensional model. в: Letters on Materials. 2018 ; Том 7, № 4. стр. 442-446.

BibTeX

@article{8dcb054aba1c412f894667295fd9b36c,
title = "Molecular dynamics simulation of the effect of dislocations on the martensitic transformations in a two-dimensional model",
abstract = "Investigation of the thermoelastic martensitic transformation is of high interest nowadays because of the numerous applications of the materials with such structural peculiarities. Thermodynamics, kinetics, structure, morphology of martensitic transformation still remain unclear in many respects. From this point of view, the effective way to study various properties of metallic crystals on atomistic level is molecular dynamics simulation, for which good qualitative agreement with the experiment can be achieved even with simple Morse or Lennard-Jones interatomic potentials. In this paper, the effect of dislocations on the direct and reverse martensitic transformation is studied by molecular dynamics simulation in a two-dimensional model of the ordered alloy with the AB stoichiometry. The three dimensional analog to this structure is B2 superstructure based on bcc lattice, which is characteristic for intermetallic NiTi alloy. It is found, that the dislocations can be considered as the nucleation centers for martensite phase, increasing the temperature of the direct martensitic transformation in comparison with the homogeneous martensitic transformation. The martensite domains found in the structure after transformation and the reverse martensitic transformation takes place in the presence of the domain boundaries, meaning that the austenite nucleates heterogeneously. At the reverse transformation, splitting of perfect dislocations into partials dislocations took place. Thus, it was established in the present study that, on the one hand, dislocations affect the direct martensitic transformation as the nucleation centers, and from the other hand, reverse martensitic transformation changes the dislocation structure of the modeled alloy.",
keywords = "martensitic transformation, Martensite, Austenite, dislocation, ordered alloy, molecular dynamics",
author = "S.V. Dmitriev and M.P. Kashchenko and J.A. Baimova and R.I. Babicheva and D.V. Gunderov and V.G. Pushin",
year = "2018",
language = "English",
volume = "7",
pages = "442--446",
journal = "Letters on Materials",
issn = "2218-5046",
publisher = "RUSSIAN ACAD SCIENCES, INST METALS SUPERPLASTICITY PROBLEMS",
number = "4",

}

RIS

TY - JOUR

T1 - Molecular dynamics simulation of the effect of dislocations on the martensitic transformations in a two-dimensional model

AU - Dmitriev, S.V.

AU - Kashchenko, M.P.

AU - Baimova, J.A.

AU - Babicheva, R.I.

AU - Gunderov, D.V.

AU - Pushin, V.G.

PY - 2018

Y1 - 2018

N2 - Investigation of the thermoelastic martensitic transformation is of high interest nowadays because of the numerous applications of the materials with such structural peculiarities. Thermodynamics, kinetics, structure, morphology of martensitic transformation still remain unclear in many respects. From this point of view, the effective way to study various properties of metallic crystals on atomistic level is molecular dynamics simulation, for which good qualitative agreement with the experiment can be achieved even with simple Morse or Lennard-Jones interatomic potentials. In this paper, the effect of dislocations on the direct and reverse martensitic transformation is studied by molecular dynamics simulation in a two-dimensional model of the ordered alloy with the AB stoichiometry. The three dimensional analog to this structure is B2 superstructure based on bcc lattice, which is characteristic for intermetallic NiTi alloy. It is found, that the dislocations can be considered as the nucleation centers for martensite phase, increasing the temperature of the direct martensitic transformation in comparison with the homogeneous martensitic transformation. The martensite domains found in the structure after transformation and the reverse martensitic transformation takes place in the presence of the domain boundaries, meaning that the austenite nucleates heterogeneously. At the reverse transformation, splitting of perfect dislocations into partials dislocations took place. Thus, it was established in the present study that, on the one hand, dislocations affect the direct martensitic transformation as the nucleation centers, and from the other hand, reverse martensitic transformation changes the dislocation structure of the modeled alloy.

AB - Investigation of the thermoelastic martensitic transformation is of high interest nowadays because of the numerous applications of the materials with such structural peculiarities. Thermodynamics, kinetics, structure, morphology of martensitic transformation still remain unclear in many respects. From this point of view, the effective way to study various properties of metallic crystals on atomistic level is molecular dynamics simulation, for which good qualitative agreement with the experiment can be achieved even with simple Morse or Lennard-Jones interatomic potentials. In this paper, the effect of dislocations on the direct and reverse martensitic transformation is studied by molecular dynamics simulation in a two-dimensional model of the ordered alloy with the AB stoichiometry. The three dimensional analog to this structure is B2 superstructure based on bcc lattice, which is characteristic for intermetallic NiTi alloy. It is found, that the dislocations can be considered as the nucleation centers for martensite phase, increasing the temperature of the direct martensitic transformation in comparison with the homogeneous martensitic transformation. The martensite domains found in the structure after transformation and the reverse martensitic transformation takes place in the presence of the domain boundaries, meaning that the austenite nucleates heterogeneously. At the reverse transformation, splitting of perfect dislocations into partials dislocations took place. Thus, it was established in the present study that, on the one hand, dislocations affect the direct martensitic transformation as the nucleation centers, and from the other hand, reverse martensitic transformation changes the dislocation structure of the modeled alloy.

KW - martensitic transformation

KW - Martensite

KW - Austenite

KW - dislocation

KW - ordered alloy

KW - molecular dynamics

UR - https://lettersonmaterials.com/Upload/Journals/2584/442-4462.pdf

M3 - Article

VL - 7

SP - 442

EP - 446

JO - Letters on Materials

JF - Letters on Materials

SN - 2218-5046

IS - 4

ER -

ID: 36060359