Structural model for bulk amorphous alloys

Gang Fan; P. K. Liaw; T. W. Wilson; W. Dmowski; H. Choo; C. T. Liu; J. W. Richardson; Th Proffen

doi:10.1063/1.2345276

Structural model for bulk amorphous alloys

Gang Fan, P. K. Liaw, T. W. Wilson, W. Dmowski, H. Choo, C. T. Liu, J. W. Richardson, Th Proffen

Research output: Contribution to journal › Article › peer-review

42 Scopus citations

Abstract

A structural model is proposed for bulk amorphous alloys based on the pair distribution functions (PDFs) measured using neutron scattering at ambient and cryogenic temperatures and different structural states. Reverse Monte Carlo (RMC) simulations were performed, in which icosahedral and cubic structures were used as the initial structures for the PDF refinement. The combined PDF and RMC studies show that strongly bonded clusters, with atomic-bond lengths shorter than their crystalline counterpart structures, are randomly distributed and strongly connected in the amorphous matrix. An attempt has also been made to identify the relationship between amorphous structures and their mechanical properties.

Original language	English
Article number	111905
Journal	Applied Physics Letters
Volume	89
Issue number	11
DOIs	https://doi.org/10.1063/1.2345276
State	Published - 2006
Externally published	Yes

Funding

C.F. acknowledges T. Egami, S. J. L. Billinge, T. Hufnagel, J. J. Wall, and E. R. Maxey. This work was supported by the NSF (DMR-0231320) and benefited from the use of NPDF at Los Alamos National Laboratory (DOE: W-7405-ENG-36) and GPPD at Argonne National Laboratory (W-31-1090Eng-38). C.T.L. is supported by the DOE (DE-AC05-00OR-22725) with UT-Battelle, LLC.

Funders	Funder number
National Science Foundation	DMR-0231320
U.S. Department of Energy	W-7405-ENG-36
Argonne National Laboratory	DE-AC05-00OR-22725, W-31-1090Eng-38
Los Alamos National Laboratory

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AU - Fan, Gang

AU - Liaw, P. K.

AU - Wilson, T. W.

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AU - Choo, H.

AU - Liu, C. T.

AU - Richardson, J. W.

AU - Proffen, Th

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Structural model for bulk amorphous alloys

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