Structural and chemical orders in metallic glass by molecular dynamics simulation
- Zhejiang Univ., Hangzhou (China). College of Science, Dept. of Applied Physics; Ames Lab. and Iowa State Univ., Ames, IA (United States)
- Ames Lab. and Iowa State Univ., Ames, IA (United States); Northwestern Polytechnical Univ., Xi'an (China). MOE Key Lab. of Materials Physics and Chemistry under Extraordinary Conditions, School of Natural and Applied Sciences
- Northwestern Polytechnical Univ., Xi'an (China). MOE Key Lab. of Materials Physics and Chemistry under Extraordinary Conditions, School of Natural and Applied Sciences
- Ames Lab. and Iowa State Univ., Ames, IA (United States)
- Ames Lab. and Iowa State Univ., Ames, IA (United States); Iowa State Univ., Ames, IA (United States). Dept. of Physics and Astronomy
The atomic structure of Ni64.5Zr35.5 metallic glass has been investigated by molecular dynamics (MD) simulations. The calculated structure factors from the MD glassy sample at room temperature agree well with the X-ray diffraction (XRD) and neutron diffraction (ND) experimental data. Using the pairwise cluster alignment and clique analysis methods, we show that there are three types dominant short-range order (SRO) motifs around Ni atoms in the glass sample of Ni64.5Zr35.5, i.e., Mixed- Icosahedron(ICO)-Cube, Twined-Cube and icosahedron-like clusters. Furthermore, chemical order and medium-range order (MRO) analysis show that the Mixed-ICOCube and Twined-Cube clusters exhibit the characteristics of the crystalline B2 phase. In conclusion, our simulation results suggest that the weak glass-forming ability (GFA) of Ni64.5Zr35.5 can be attributed to the competition between the glass forming ICO SRO and the crystalline Mixed-ICO-Cube and Twined-Cube motifs.
- Research Organization:
- Ames Laboratory (AMES), Ames, IA (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- Grant/Contract Number:
- AC02-07CH11358; 11304279; 11104247; 51671160; 51271149; LY18E010007; 201608330083
- OSTI ID:
- 1429408
- Alternate ID(s):
- OSTI ID: 1423920
- Report Number(s):
- IS-J-9608; PRMHAR; TRN: US1802476
- Journal Information:
- Physical Review Materials, Vol. 2, Issue 3; ISSN 2475-9953
- Publisher:
- American Physical Society (APS)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
Web of Science
Polytetrahedral structure and glass-forming ability of simulated Ni–Zr alloys
|
journal | October 2018 |
Effects of Si solute on the glass formation and atomic structure of Pd liquid
|
journal | February 2019 |
Effects of Si solute on the glass formation and atomic structure of Pd liquid | text | January 2018 |
Similar Records
Deformation behavior of an amorphous Cu[subscript 64.5]Zr[subscript 35.5] alloy: A combined computer simulation and experimental study
Measurements of structural and chemical order in and liquids