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Title: Cooling rate dependence of structural order in Al90Sm10 metallic glass

Journal Article · · Journal of Applied Physics
DOI:https://doi.org/10.1063/1.4955223· OSTI ID:1349898
ORCiD logo [1];  [2];  [2];  [2];  [3];  [4];  [5]
  1. Univ. of Science and Technology of China, Anhui (China); Ames Lab., Ames, IA (United States)
  2. Ames Lab., Ames, IA (United States)
  3. Univ. of Science and Technology of China, Anhui (China)
  4. Ames Lab. and Iowa State Univ., Ames, IA (United States)
  5. Univ. of Science and Technology of China, Anhui (China); Ames Lab., Ames, IA (United States); Iowa State Univ., Ames, IA (United States)

Here, the atomic structure of Al90Sm10 metallic glass is studied using molecular dynamics simulations. By performing a long sub-Tg annealing, we developed a glass model closer to the experiments than the models prepared by continuous cooling. Using the cluster alignment method, we found that “3661” cluster is the dominating short-range order in the glass samples. The connection and arrangement of “3661” clusters, which define the medium-range order in the system, are enhanced significantly in the sub-Tg annealed sample as compared with the fast cooled glass samples. Unlike some strong binary glass formers such as Cu64.5Zr35.5, the clusters representing the short-range order do not form an interconnected interpenetrating network in Al90Sm10, which has only marginal glass formability.

Research Organization:
Ames Laboratory (AMES), Ames, IA (United States)
Sponsoring Organization:
USDOE
Grant/Contract Number:
2012CB933702; 11274288; 11574289; 201406340015; AC02-07CH11358
OSTI ID:
1349898
Alternate ID(s):
OSTI ID: 1260852
Report Number(s):
IS-J-9247; TRN: US1701794
Journal Information:
Journal of Applied Physics, Vol. 120, Issue 1; ISSN 0021-8979
Publisher:
American Institute of Physics (AIP)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 45 works
Citation information provided by
Web of Science

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Cited By (8)

Cooling rate dependence of structural order in Ni 62 Nb 38 metallic glass journal January 2018
A comparative study of Sm networks in Al-10 at.%Sm glass and associated crystalline phases journal January 2018
Pressure dependence of the structure of liquid NiTi: a molecular dynamics study journal June 2019
Predicting Complex Relaxation Processes in Metallic Glass journal September 2019
Microstructure evolution during near- T g annealing and its effect on shear banding in model alloys journal December 2019
Recent Topics on the Structure and Crystallization of Al-based Glassy Alloys journal January 2019
Effects of Dopants on the Glass Forming Ability in Al-Based Metallic Alloy journal January 2018
Effects of Si solute on the glass formation and atomic structure of Pd liquid text January 2018

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