Microscopic insight into the origin of enhanced glass-forming ability of metallic melts on micro-alloying

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journal

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Author(s)

  • C. J. Chen
  • A. Podlesnyak
  • E. Mamontov
  • W. H. Wang
  • S. M. Chathoth

Detail(s)

Original languageEnglish
Article number131901
Journal / PublicationApplied Physics Letters
Volume107
Issue number13
Publication statusPublished - 28 Sep 2015

Abstract

Extensive efforts have been made to develop metallic-glasses with large casting diameter. Such efforts were hindered by the poor understanding of glass formation mechanisms and the origin of the glass-forming ability (GFA) in metallic glass-forming systems. In this work, we have investigated relaxation dynamics of a model bulk glass-forming alloy system that shows the enhanced at first and then diminished GFA on increasing the percentage of micro-alloying. The micro-alloying did not have any significant impact on the thermodynamic properties. The GFA increasing on micro-alloying in this system cannot be explained by the present theoretical knowledge. Our results indicate that atomic caging is the primary factor that influences the GFA. The composition dependence of the atomic caging time or residence time is found to be well correlated with GFA of the system.

Citation Format(s)

Microscopic insight into the origin of enhanced glass-forming ability of metallic melts on micro-alloying. / Chen, C. J.; Podlesnyak, A.; Mamontov, E.; Wang, W. H.; Chathoth, S. M.

In: Applied Physics Letters, Vol. 107, No. 13, 131901, 28.09.2015.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journal