Viscosity of Liquid Nanocrystalline Alloys

Abstract:

Temperature dependences of the kinematic viscosity, density, and electrical resistivity of Fe_72.5Cu₁Nb₂Mo_1.5Si₁₄B₉ and Fe_84.5Cu_0.6Nb_0.5Si_1.5B_8.6P₄C_0.3 multicomponent melts have been studied. We found different behavior of the temperature dependences of viscosity near the critical point T_k = 1760 K during heating, which is associated with different chemical compositions of the clusters in the melt. In the cooling stage, the activation energy of the viscous flow for these two melts is the same and equal to 43 kJ·mol^-1. At a temperature of 1720 K, the relative free volume is 5.1 and 7.5 % of the total melt volume for Fe_72.5Cu₁Nb₂Mo_1.5Si₁₄B₉ and Fe_84.5Cu_0.6Nb_0.5Si_1.5B_8.6P₄C_0.3 respectively. In the cooling stage, the electrical resistance of melt is higher than at the heating stage.

• Periodical: Key Engineering Materials (Volume 880)
• Pages: 35-41
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.880.35
• Online since: March 2021
• Authors: Vladimir S. Tsepelev*, Yuri N. Starodubtsev, Nadezhda P. Tsepeleva
• Keywords: Density, Electrical Resistivity, Kinematic Viscosity, Melt, Nanocrystalline Alloy

References

[1] G. Herzer: in Handbook of Magnetic Materials, Vol.10, edited by K.H.J. Buschow (Elsevier Science B.V., 1997).

[2] A. Makino: IEEE Trans. Magn. 48 (2012), p.1331.

[3] P.S. Popel and V.E. Sidorov: Mater. Sci. Eng. A226–228 (1997), p.237.

[4] U. Dahlborg, M. Calvo-Dahlborg, P.S. Popel and V.E. Sidorov: Eur. Phys. J. B14 (2000), p.639.

DOI: 10.1007/s100510051073

[5] G. Kumar, T. Ohkubo and K. Hono: J. Mater. Res. 24 (2009), p.2353.

[6] B.A. Baum: Metal liquids (Nauka, Moscow, 1979).

[7] V. Tsepelev, V. Konashkov, Y. Starodubtsev, Y. Belozerov and D. Gaipisherov: IEEE Trans. Magn. 48, (2012), p.1327.

DOI: 10.1109/tmag.2011.2175209

[8] J. Frenkel, Kinetic theory of liquids (Сlaredon Press, 1946).

[9] A.I. Batschinski: Z. Phys. Chem. 84 (1913), p.643.

[10] V. Tsepelev, Yu. Starodubtsev, V. Konashkov, K. Wu and R. Wang: J. Alloys Comp. 790 (2019), p.547.

[11] T. Iida and R.I.L. Guthrie: The thermophysical properties of metallic liquids (University Press, Oxford, 2015).

[12] A.L. Beľtyukov, V.I. Laďyanov and A.I. Sishmarin: High Temperature 52 (2014), p.185.

[13] V.I. Laďyanov, A.L. Beľtyukov and A.I. Sishmarin: Rasplavy 4 (2005), p.34.

[14] A.L. Beľtyukov, O.Yu. Goncharov and V.I. Laďyanov: Rus. J. Phys. Chem. 91 (2017), p. (1919).

[15] B. Dong, S. Zhou, J. Qin, Y. Li, H. Chen and Y. Wang:Prog. Nat. Sci.: Mater. Int. 28 (2018), p.696.

[16] J. Miettinen, V-V. Visuri, T. Fabritius, N. Milcheva and G. Vassilev: Arch. Metall. Mater. 64 (2019), p.1239.