Abstract
Structural evolution of the amorphous alloy Ni70Mo10P20 has been studied by x-ray diffraction, and by following transmission and high-resolution electron microscopy annealing both above and below the glass-transition temperature. When annealed above this temperature, the amorphous phase undergoes segregation into regions about 100 nm in size having different chemical composition. Diffraction from such samples produces diffuse rings, and the scattering vector corresponding to the maximum intensity varies from point to point within the interval of 4.88 to 4.78 nm−1. When occurring between the glass-transition and crystallization temperatures, crystallization produces groups of nanocrystals, 20–30 nm in size, which are in direct contact with one another and form a polymorphic mechanism. The crystallization mechanism changes when the annealing temperature is brought below the glass-transition point. At these temperatures the amorphous matrix crystallizes entectically with formation of eutectic colonies.
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References
L. Q. Xing and P. Ochina, Mater. Lett. 30, 283 (1997).
W. H. Wang, Q. Wei, and H. Y. Bai, Appl. Phys. Lett. 74, 58 (1997).
V. V. Molokanov, A. I. Shcherbakov, M. I. Petrzhik, T. N. Mikhailova, A. S. Aronin, and T. E. Andreeva, Prot. Metals 33, 127 (1997).
V. V. Molokanov, T. N. Mikhailova, I. A. Kliger, and M. I. Petrzhik, Mater. Sci. Eng., A 226–228, 474 (1997).
K. Suzuki, K. Fuzimori, and L. Hasimoto, Amorphous Metals, Metallurgiya, Moscow (1987), 328 pp.
A. S. Aronin, G. E. Abrosimova, I. I. Zver’kova, Yu. V. Kir’janov, V. V. Molokanov, and M. I. Petrzhik, Mater. Sci. Eng., A 226–228, 536 (1997).
G. E. Abrosimova, A. S. Aronin, I. I. Zver’kova, A. F. Gurov, and Yu. V. Kir’yanov, Fiz. Tverd. Tela (St. Petersburg) 40, 10 (1998) [Phys. Solid State 40, 8 (1998)].
M. Hansen and K. Anderko, Constitution of Binary Alloys [McGraw-Hill, New York, 1958; Metallurgizdat, Moscow, 1962, 1488 pp.].
G. E. Abrosimova, A. S. Aronin, and L. V. Voropaeva, Metallofizika 11,3, 102 (1989).
A. S. Aronin, S. A. Ivanov, and A. E. Yakshin, Fiz. Tverd. Tela (Leningrad) 33, 2527 (1991) [Sov. Phys. Solid State 33, 1427 (1991)].
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Fiz. Tverd. Tela (St. Petersburg) 40, 1577–1580 (September 1998)
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Abrosimova, G.E., Aronin, A.S., Gurov, A.F. et al. Phase segregation and crystallization in the amorphous alloy Ni70Mo10P20 . Phys. Solid State 40, 1429–1432 (1998). https://doi.org/10.1134/1.1130609
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DOI: https://doi.org/10.1134/1.1130609