NDLI: Mechanism of Ag and Al on improving the glass forming ability of CuZr-based alloys

Content Provider	Springer Nature Link
Author	Ni, Xiao dong Wang, Zheng Sun, Xiang Shen, Jiang Chen, Nan xian
Copyright Year	2011
Abstract	By a mean field theoretical computation, the equilibrium distributions of additional Ag and Al in the crystalline phase of CuZr-based alloys were determined to occupy the two sublattices of the B2 structure randomly. With the molecular dynamics technique, the effects of Ag and Al on the enthalpy difference (ΔH) between the supercooled melt and the crystalline phase were evaluated. The improved glass forming ability of Cu$_{45}$Zr$_{45}$Al$_{10}$ and Cu$_{45}$Zr$_{45}$Ag$_{10}$ can be attributed to their remarkably smaller ΔH than that of CuZr. The calculated diffusion coefficients are more sensitive to the atomic weight of the component atoms than to their interaction strength. As the component atom with the largest mass, the additional Ag increases the viscosity of the supercooled melt significantly and the experimentally stronger glass formation ability of Cu$_{45}$Zr$_{45}$Ag$_{10}$ than Cu$_{45}$Zr$_{45}$Al$_{10}$ can be well understood.
Starting Page	424
Ending Page	429
Page Count	6
File Format	PDF
ISSN	16744799
Journal	International Journal of Minerals, Metallurgy, and Materials
Volume Number	18
Issue Number	4
e-ISSN	1869103X
Language	English
Publisher	University of Science and Technology Beijing
Publisher Date	2011-07-31
Publisher Place	Beijing
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	metallic glass ternary systems computer simulation glass forming ability atomistic simulation site occupancy Materials Science Metallic Materials Characterization and Evaluation of Materials Ceramics, Glass, Composites, Natural Methods Surfaces and Interfaces, Thin Films Tribology, Corrosion and Coatings
Content Type	Text
Resource Type	Article
Subject	Materials Chemistry Mechanics of Materials Metals and Alloys Geochemistry and Petrology Mechanical Engineering

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