Correlation Between Viscosity and Local Atomic Structure in Liquid Zr56Co28Al16 Alloy

Temperature-dependent viscosity and its relationship with local atomic packing structure of a liquid Zr 56 Co 28 Al 16 alloy have been investigated by using an electromagnetic levitation device on board a parabolic flight airplane, together with ab initio molecular dynamics simulations. It is found...

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Veröffentlicht in:	Microgravity science and technology 2022-02, Vol.34 (1), Article 10
Hauptverfasser:	Wang, X. L., Dong, Y., Mohr, M., Fecht, H.-J., Wang, X. D., Cao, Q. P., Zhang, D. X., Dai, Z. W., Jiang, J. Z.
Format:	Artikel
Sprache:	eng
Schlagworte:	Aerospace Technology and Astronautics Atomic structure Classical and Continuum Physics Engineering Magnetic levitation Molecular dynamics Original Research Parabolic flight Space Exploration and Astronautics Space Sciences (including Extraterrestrial Physics Temperature dependence Viscosity Zirconium base alloys
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Zusammenfassung:	Temperature-dependent viscosity and its relationship with local atomic packing structure of a liquid Zr 56 Co 28 Al 16 alloy have been investigated by using an electromagnetic levitation device on board a parabolic flight airplane, together with ab initio molecular dynamics simulations. It is found that viscosity inversely correlates with the fraction of ‘loose’ atoms having larger free volume, indicating that the temperature-dependent viscosity during cooling is statistically related with the fraction of close packing atoms.
ISSN:	0938-0108 1875-0494
DOI:	10.1007/s12217-022-09925-8