THE STUDY OF FEATURES OF POINT DEFECTS MIGRATION IN CuPt ORDERED ALLOY IN THE CONDITIONS OF DEFORMATION
https://doi.org/10.17073/0368-0797-2015-12-919-924
Abstract
The values of migration energy of vacancy and interstitial atom in CuPt ordered alloy were calculated using the method of molecular dynamics. During migration of the vacancy and the interstitial atom mainly the Cu atoms migrate. The interstitial atom forms confi gurations in CuPt ordered alloy not typical for pure metals: excess Cu atom seek to form crowdion along the <110> direction in (111) plane containing copper atoms; in the case of introduction of Pt atom dumbbell shaped confi guration of the two Pt atoms forms in the <111> direction perpendicular to the (111) plane containing Pt atoms. The high anisotropy of interstitial atom migration has been found: interstitial atom in CuPt ordered alloy migrates, as a rule, along (111) planes containing Cu atoms. At the tension along this plane, similar anisotropy is partly observed at vacancy migration, but interstitial atom in this case migrates mainly along the axis of tension.
About the Authors
A. A. Soskov
Siberian State Industrial University
Russian Federation
Russian Federation
Postgraduate of the Chair of Physics named after V.M. Finkel,
42, Kirova Str., Novokuznetsk, Kemerovo Region, 654007
G. M. Poletaev
Altai State Technical University
Russian Federation
Russian Federation
Dr. Sci. (Phys.-math.), Professor, Head of the Chair of Advanced Mathematics and Mathematical Modeling,
46, Lenina ave., Barnaul, Altai Territory, 656038
M. D. Starostenkov
Altai State Technical University
Russian Federation
Russian Federation
Dr. Sci. (Phys.-math.), Professor, Head of the Chair of General Physics,
46, Lenina ave., Barnaul, Altai Territory, 656038
References
1. Kozlov E.V., Dement’ev V.M., Kormin N.M., Shtern D.M. Struktury i stabil’nost’ uporyadochennykh faz [Structures and stability of ordered phases]. Tomsk: izd. Tomskogo un-ta, 1994, 248 p. (In Russ.).
2. Matveeva N.M., Kozlov E.V. Uporyadochennye fazy v dvoinykh metallicheskikh sistemakh [Ordered phases in double metallic systems]. Moscow: Nauka, 1989, 280 p. (In Russ.).
3. Chaplygina A.A. Issledovanie strukturnykh i sverkhstrukturnykh prevrashchenii v splavakh sistemy Cu – Pt. Avtoref. diss. kand. fiz.- mat. nauk [Reserach of structural and superstructural transformations in the alloys of Cu – Pt system. Extended Abstract of Cand. Phys.-math. Sci. Diss.]. Tomsk, 2013, 23 p. (In Russ.).
4. Lyakishev N.P., Alymov M.I. Nanomaterilas of structural purpose. Rossiiskie nanotekhnologii. 2006, no. 1-2, pp. 71–80. (In Russ.).
5. Starenchenko V.A., Solov’eva Yu.V., Starenchenko S.V., Kovalevskaya T.A. Termicheskoe i deformatsionnoe uprochnenie monokristallov splavov so sverkhstrukturoi L12 [Thermal and strain hardening of alloy single crystals with L12 superstructure]. Tomsk: izd-vo NTL, 2006. 292 p. (In Russ.).
6. Carr D.A., Corbitt J., Hart G.R., Gilmartin E., Hart G.L. Finding new phases for precipitate-hardening in platinum and palladium alloys. Computational Materials Science. 2012, vol. 51, pp. 331–339.
7. Ogorodnikova O.M., Litvinov V.S. Odering kinetics of platinumnickel-copper alloys by L10 type. Fizika metallov i metallovedenie. 1993, vol. 75, no. 6, pp. 113–117. (In Russ.).
8. Vlasova N.I., Shchegoleva N.N., Kandaurova G.S., Shilova N.F. Magnetic domain structure of thermally demagnetized CoPt crystals at early stages of ordering under the eff ect of a tensile load. Physics of Metals and Metallography. 2001, vol. 91, no. 6, pp. 559–577.
9. Artem’ev E.M., Zhivaeva L.V. Atom ordering and magnetic film properties of FePd, FePt, Fe50Pd50-x Ptx alloys. Izvestiya RAN. Seriya fizicheskaya. 2006, vol. 70, no. 4, pp. 556–558. (In Russ.).
10. Starenchenko V.A., Starenchenko S.V., Kolupaeva S.N., Pantyukhova O.D. Generation of point defects in alloys with the L12 superlattice. Russian Physics Journal. 2000, vol. 43, no. 1, pp. 61–65.
11. Poletaev G.M., Dmitrienko D.V., Diabdenkov V.V., Mikrukov V.R., Starostenkov M.D. Molecular dynamics investigation of the diffusion permeability of triple junctions of tilt and mixed-type boundaries in nickel. Physics of the Solid State. 2013, vol. 55, no. 9, pp. 1920–1924.
12. Poletaev G.M., Starostenkov M.D. Contributions of different mechanisms of self-diffusion in face-centered cubic metals under equilibrium conditions. Physics of the Solid State. 2010, vol. 52, no. 6, pp. 1146–1154.
13. Matsukawa Y., Zinkle S.J. Dynamic observation of the collapse process of a stacking fault tetrahedron by moving dislocations. Journal of Nuclear Materials. 2004. vol. 329–333, pp. 919–923.
14. Zhao P., Shimomura Y. Molecular dynamics calculations of properties of the self-interstitials in copper and nickel. Computational Materials Science. 1999, no. 14, pp. 84–90.
15. 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, vol. 22, no. 1, pp. 15–19.
Review
For citations:
Soskov A.A., Poletaev G.M., Starostenkov M.D. THE STUDY OF FEATURES OF POINT DEFECTS MIGRATION IN CuPt ORDERED ALLOY IN THE CONDITIONS OF DEFORMATION. Izvestiya. Ferrous Metallurgy. 2015;58(12):919-924. (In Russ.) https://doi.org/10.17073/0368-0797-2015-12-919-924
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