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June 2016, № 6 (194)

Zakharov P.V., Eremin A.M., Manakov N.A., Starostenkov M.D., Vdovin R.S. COOPERATIVE ATOMIC DISPLACEMENTS NEAR INTERPHASE BOUNDARIES NI-γFEBy method of molecular dynamics studied the cooperative atomic displacements near the interface a bimetal solid-phase contact Ni-γFe. The differences in the behavior of the Ni and Fe atoms with their participation in the process of mass transfer across borders is established. Currently still a lot of unresolved issues related to the atomic structure of interfaces and mechanisms of their interaction with a variety of defects generated by, for example, by radiation exposure. In particular, special interest is the cooperative atomic displacements near the interphase boundaries and their contribution to the transport of energy and mass. It is shown that the introduction of interstitial atoms near the interface can cause a cooperative atomic displacements that lead to the climb of misfit dislocations. All cooperative atomic displacements proceeded on crowdions mechanism along the packed rows. The differences of behavior of atomic displacements on the number of interstitial atoms, and their type. The differences in the behavior of atoms, apparently, due to the high binding energy of the type Ni-γFe compared with connections type γFe-γFe, resulting in the Fe atoms are more mobile than the Ni atoms and penetrate through the interface is much more intense. Such activity of Fe atoms near the interface Ni-γFe border creates the preconditions for the consideration of such phenomena in the boundary as the basis for the creation of new materials with specific desired properties.Key words: bimetal, cooperative atomic displacements, misfit dislocations, interphase boundary, the method of molecular dynamics.

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References:

1. Bokshtein SZ, Bolberova EV, Ignatov IA Kishkin ST, Razumovsky IM The effect of the lattice mismatch in the phase diffusion constant interphase boundaries // Physics of Metals and Metallography. — 1985. — T. 59, №5. — S. 938-942.

2. Tkhorikov YA, Khazan LS Plastic deformation and misfit dislocations in heteroepitaxial systems. — Kiev — Naukova Dumka. — 1990. — 321 p.

3. Bokshtein BS Diffusion in metals. — M. — Metallurgy. — 1978. — 248 p.

4. Poletaev GM, Potekaev AI Starostenkov MD, nipples AA Klopotov AA, VV Kulagin, Grinkevich LS The energy of formation and migration of point defects in ordered alloys and CuPt CuPt3. // Proceedings of the higher educational institutions. Physics. — 2015. — T. 58, №1. — S. 38-43.

5. Bokshtein SZ The structure and properties of metal alloys. — M. — Metallurgy. — 1971. — 496 p.

6. Poletaev G.M., Sannikov A.V., Berdychenko A.A., Starostenkov M.D. Molecular dynamics study of plastic deformation mechanisms near the interphase boundary in two-dimensional bimetallic systems // Materials Physics and Mechanics. — 2015. — V. 22, №1. — P. 15-19.

7. Starostenkov M.D., Poletayev G.M., Starostenkov D.M. Structure of interphase boundaries in bimetallic thin films // Journal of Materials Science and Technology. — 2001. — V. 17, № 1. — P. 59-60.

8. Markidonov AV Starostenkov MD, PV Zakharov, OV Obidina Moving dislocation ensembles in fcc crystals in high-energy external action // Fundamental problems of modern materials. — 2015. — T. 12, № 3. — S. 373-381.

9. Poletaev GM Novoselov DV Starostenkov MD, Martynova EV Kaygorodova VM Investigation of the conditions of formation of strained triple junctions of grain boundaries in nickel // Fundamental problems of modern materials. — 2014. — T. 11, number 4. — S. 495-500.

10. AV Sannikov, Poletaev GM, Mikryukov VR, Starostenkov MD, nipples AA Atomic structure and the diffusion constant interphase boundaries Ni-Al, Cu-Au, Ni-γFe // Proceedings of the universities. Ferrous metallurgy. — 2014. — T. 57, №8. — S. 56-59.

11. C. Kittel, Introduction to Solid State Physics. — M .: Nauka. — 1978. — 792 p.

12. CJ Smitlz Metals: Ref. — M .: Metallurgy. — 1980. — 447 p.

13. Poletaev, GM Molecular dynamics simulations of structural and energy transformations in two-dimensional metals and alloys (MD2) / Rospatent certificate number 2008610486 on 25 January 2008.

14. NV Gorlov Computer simulation of planar defects in ordered alloys of the type A3B A3B and (C). Thesis for scientific degree of candidate of physical and mathematical sciences. — Tomsk. — 1987. — 214 p.

15. Tsaregorodcev AI, NV Gorlov, Dem'yanov BF, MD Starostenkov Atomic structure of AFG and its impact on the state of the lattice near the dislocation in ordered alloys with superstructure LL2 // Physics of Metals and Metallography. — 1984. — T. 58, № 2. — S. 336-343.

16. Tsaregorodcev AI, NV Gorlov, Dem'yanov BF, MD Starostenkov The atomic structure of the AFG and its impact on the state of the lattice near the dislocation in ordered alloys with superstructure L12 // FMM. — 1984. — V. 58, №2. — S. 336-343.

17. Bokshtein BS Atoms wander through the crystal. — M .: Nauka. Home Edition Sci. Literature. — 1984. — 208 p.

18. Poletaev GM The atomic mechanisms of structural and energy transformations in the volume of the crystal grain boundaries and near the slope in the fcc metals. Abstract of dissertation for the degree of Doctor of Physical and Mathematical Sciences. — Barnaul. — 2008. — 40 p.

19. Plishkin YM diffusion problems Research methods of computer simulation // Computer simulation of defects in crystals. Thematic collection. — L .: Publishing house of the PTI. — 1980. — P. 23-32.

20. Plishkin YM Methods of computer simulation in the theory of crystal defects / Proc .: Defects in the crystals and their computer simulation. — L .: Nauka. — 1980. — P. 77-99.

21. Heermann DV computer simulation methods in theoretical physics: Trans. from English. / Ed. SA Akhmanova. — M. — Science. — 1990. — 176 p.

22. Poletaev GM, MD Starostenkov Dynamic collective displacements of atoms in metals and their role in the vacancy mechanism of diffusion // Solid State Physics. — 2009. — T.51, №4. — S. 686-691.

About this article

Authors: Eryomin A.M., Zaharov P.V., Manakov N.A., Starostenkov M.D., Vdovin R.S.

Year: 2016

Editor-in-chief

Sergey Aleksandrovich
MIROSHNIKOV

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