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Short- and medium-range orders in Al90Tb10 glass and their relation to the structures of competing crystalline phases

Journal Article · · Acta Materialia
 [1];  [1];  [2];  [2];  [2];  [2]
  1. Zhejiang Univ. of Technology, Hangzhou (China)
  2. Ames Lab., Ames, IA (United States); Iowa State Univ., Ames, IA (United States)

Molecular dynamics simulations using an interatomic potential developed by artificial neural network deep machine learning are performed to study the local structural order in Al90Tb10 metallic glass. We show that more than 80% of the Tb-centered clusters in Al90Tb10 glass have short-range order (SRO) with their 17 first coordination shell atoms stacked in a ‘3661’ or ‘15551’ sequence. Medium-range order (MRO) in Bergman-type packing extended out to the second and third coordination shells is also clearly observed. Analysis of the network formed by the ‘3661’ and ‘15551’ clusters show that ~82% of such SRO units share their faces or vertexes, while only ~6% of neighboring SRO pairs are interpenetrating. Such a network topology is consistent with the Bergman-type MRO around the Tb-centers. Moreover, crystal structure searches using genetic algorithm and the neural network interatomic potential reveal several low-energy metastable crystalline structures in the composition range close to Al90Tb10. Some of these crystalline structures have the ‘3661’ SRO while others have the ‘15551’ SRO. While the crystalline structures with the ‘3661’ SRO also exhibit the MRO very similar to that observed in the glass, the ones with the ‘15551’ SRO have very different atomic packing in the second and third shells around the Tb centers from that of the Bergman-type MRO observed in the glassy phase.

Research Organization:
Ames Laboratory (AMES), Ames, IA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES). Materials Sciences & Engineering Division; National Natural Science Foundation of China (NSFC); Natural Science Foundation of Zhejiang Province
Grant/Contract Number:
AC02-07CH11358
OSTI ID:
1735847
Alternate ID(s):
OSTI ID: 1780024
Report Number(s):
IS--J-10,374
Journal Information:
Acta Materialia, Journal Name: Acta Materialia Vol. 204; ISSN 1359-6454
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English

References (34)

Fast Parallel Algorithms for Short-Range Molecular Dynamics journal March 1995
Amorphous aluminum alloys—synthesis and stability journal March 2002
Ageless Aluminum-Cerium-Based Alloys in High-Volume Die Casting for Improved Energy Efficiency journal April 2018
Crystallization behaviour of Al-based metallic glasses below and above the glass-transition temperature journal December 2002
Mechanisms for nanocrystal formation in metallic glasses journal March 2003
The atomic structure of aluminum based metallic glasses and universal criterion for glass formation journal October 1996
Nucleation-controlled reactions and metastable structures journal January 2004
Amorphous, nanoquasicrystalline and nanocrystalline alloys in Al-based systems journal December 1998
Amorphization and nanostructure synthesis in Al alloys journal November 2002
The effect of phase separation on subsequent crystallization in Al88Gd6La2Ni4 journal October 2000
Phase separation mediated devitrification of Al88Y7Fe5 glasses journal July 2010
Local chemical and topological order in Al–Tb and its role in controlling nanocrystal formation journal February 2012
Nucleation kinetics in Al-Sm metallic glasses journal January 2018
Thermodynamic evaluation and optimization of Al–Gd, Al–Tb, Al–Dy, Al–Ho and Al–Er systems using a Modified Quasichemical Model for the liquid journal December 2010
DeePMD-kit: A deep learning package for many-body potential energy representation and molecular dynamics journal July 2018
Influence of substitution of La by Gd on crystallization behavior of Al-Ni-La metallic glasses journal June 2019
Comparative study of the effect of cold rolling on the structure of Al–RE–Ni–Co (RE=rare-earth metals) amorphous and glassy alloys journal October 2006
Rare earth based bulk metallic glasses journal May 2009
The role of amorphous precursor in phase selection hierarchy in marginal metallic glasses journal December 2016
Dislocation formation during deformation-induced synthesis of nanocrystals in amorphous and partially crystalline amorphous Al88Y7Fe5 alloy journal January 2006
On the role of Sm in solidification of Al-Sm metallic glasses journal November 2016
Spatially Resolved Distribution Function and the Medium-Range Order in Metallic Liquid and Glass journal December 2011
‘Crystal Genes’ in Metallic Liquids and Glasses journal March 2016
Development of interatomic potential for Al–Tb alloys using a deep neural network learning method journal January 2020
Aluminum nanoscale order in amorphous Al92Sm8 measured by fluctuation electron microscopy journal April 2005
A unified formulation of the constant temperature molecular dynamics methods journal July 1984
Cooling rate dependence of structural order in Al90Sm10 metallic glass journal July 2016
Development of interatomic potentials appropriate for simulation of devitrification of Al 90 Sm 10 alloy journal April 2015
Canonical dynamics: Equilibrium phase-space distributions journal March 1985
Atomistic cluster alignment method for local order mining in liquids and glasses journal November 2010
Deep Potential Molecular Dynamics: A Scalable Model with the Accuracy of Quantum Mechanics journal April 2018
Molecular Geometry Optimization with a Genetic Algorithm journal July 1995
In situ Synchrotron Study of Phase Transformation Behaviors in Bulk Metallic Glass by Simultaneous Diffraction and Small Angle Scattering journal December 2003
Synthesis and Properties of Metallic Glasses That Contain Aluminum journal September 1988

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