Abstract—The migration energies of a vacancy and an interstitial atom in the ordered CuPt alloy are calculated using molecular dynamics simulation. A high interstitial atom migration anisotropy is detected: as a rule, an interstitial atom migrates along the (111) planes containing copper atoms. A similar anisotropy is also observed for the vacancy migration during elastic tensions along these planes.
Similar content being viewed by others
REFERENCES
E. V. Kozlov, V. M. Dement’ev, N. M. Kormin, and D. M. Shtern, Structures and Stability of Ordered Phases (Izd. Tomsk Univ., Tomsk, 1994).
B. A. Grinberg and V. I. Syutkina, New Ordering Mechanisms in Orered Alloys (Metallurgiya, Moscow, 1984).
V. G. Vaks, “Ordering alloys: structure, phase transitions, and strength,” Soros. Obraz. Zh., No. 3, 115–123 (1997).
V. V. Kulagina, A. A. Chaplygina, L. A. Popova, M. D. Starostenkov, A. I. Potekaev, and A. A. Klopotov, “Structure–phase transformations in Cu–Pt alloys during atomic ordering,” Izv. Vyssh. Uchebn. Zaved., Fiz. 55 (7), 78–87 (2012).
V. A. Starenchenko, S. V. Starenchenko, S. N. Kolupaeva, and O. D. Pantyukhova, “Generation of point defects in L12-ordered alloys,” Izv. Vyssh. Uchebn. Zaved., Fiz., No. 1, 66–70 (2000).
G. M. Poletaev and M. D. Starostenkov, “Interdiffusion mechanism near an interface in the two-dimensional Ni–Al system” Pis’ma Zh. Tekh. Fiz. 29 (11), 30–34 (2003).
G. M. Poletaev, D. V. Novoselova, I. V. Zorya, and M. D. Starostenkov, “Formation of excess free volume in triple junctions during the solidification of nickel,” Fiz. Tverd. Tela 60 (5), 846–850 (2018).
G. M. Poletaev and M. D. Starostenkov, “Structural changes in stacking fault tetrahedra during the absorption of point defects” Pis’ma Zh. Tekh. Fiz. 35 (1), 3–10 (2009).
D. Tingaud and P. Besson, “Point defects and diffusion in ordered alloys: an ab initio study of the effect of vibrations,” Intermetallics 45, 38–45 (2014).
J. Svoboda and F. D. Fischer, “Anisotropy of interstitial diffusion in bcc-crystals due to stress-induced unequal occupancies of different types of sites,” Int. J. Solids and Struct. 152–153, 66–70 (2018).
J. Tang, L. Deng, S. Xiao, H. Deng, X. Zhang, and W. Hu, “Chemical ordering and surface segregation in Cu–Pt nanoalloys: the synergetic roles in the formation of multishell structures,” J. Phys. Chem. 119, 21515–21527 (2015).
K. Yun, Y.-H. Cho, P.-R. Cha, J. Lee, H.-S. Nam, J. S. Oh, J.-H. Choi, and S.-Ch. Lee, “Monte Carlo simulations of the structure of Pt-based bimetallic nanoparticles,” Acta Mater. 60 (12), 4908–4916 (2012).
G. M. Poletaev, I. V. Zorya, D. V. Novoselova, and M. D. Starostenkov, “Molecular dynamics simulation of hydrogen atom diffusion in crystal lattice of fcc metals,” Int. J. Mater. Res. 108 (10), 785–790 (2017).
G. M. Poletaev and M. D. Starostenkov, “Contributions of various self-diffusion mechanisms in fcc metals under equilibrium,” Fiz. Tverd. Tela 52 (6), 1075–1082 (2010).
P. Zhao and Y. Shimomura, “Molecular dynamics calculations of properties of the self-interstitials in copper and nickel,” Comput. Mater. Sci., No. 14, 84–90 (1999).
G. I. Vollenberger, “Point defects” in Physical Metallurgy. Vol. 3. Mechanical Properties of Metals and Alloys, Ed. by R. Cahn (Mir, Moscow, 1987), pp. 5–74.
Y. Liu, L. Zhang, and D. Yu, “Diffusion mobilities in fcc Cu–Au and fcc Cu–Pt alloys,” J. Phase Equilibr. Diffus. 30, 136–145 (2009).
B. Mishra, P. Kiruthika, and A. Paul, “Interdiffusion in the Cu–Pt system,” J. Mater. Sci.: Mater. in Electronics 25, 1778–1782 (2014).
Author information
Authors and Affiliations
Corresponding author
Additional information
Translated by K. Shakhlevich
Rights and permissions
About this article
Cite this article
Poletaev, G.M., Starostenkov, M.D., Zorya, I.V. et al. Molecular Dynamics Study of the Point Defect Migration in the Ordered CuPt Alloy during Deformation. Russ. Metall. 2019, 927–931 (2019). https://doi.org/10.1134/S0036029519100227
Received:
Revised:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1134/S0036029519100227