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Title: Predicting the Rate of Homogeneous Intermetallic Nucleation within Steep Composition Gradients

Journal Article · · Journal of Physical Chemistry. C

Simulations of isothermal homogeneous nucleation from deeply undercooled amorphous melts exhibit systematic variations in nucleation behavior depending upon the strength of an imposed composition gradient. Data from molecular dynamics (MD) simulations in a model Ni/Al system permit quantification of the nucleation rate of the NiAl-B2 intermetallic phase and indicate that nucleation proceeds in a polymorphous mode. The nucleation rate decreases with increasing gradient, and nucleation is completely suppressed above a critical gradient. Based on an argument of crystal nucleus stability, a simple estimate provides good prediction of the critical gradient. Here, a modified classical nucleation model parameterized with thermodynamic and kinetic quantities calculated independently predicts the nucleation rates and their variation with the imposed gradient, matching the MD results very well.

Research Organization:
Johns Hopkins Univ., Baltimore, MD (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES). Materials Sciences & Engineering Division
Grant/Contract Number:
SC0019217
OSTI ID:
1774169
Journal Information:
Journal of Physical Chemistry. C, Vol. 124, Issue 43; ISSN 1932-7447
Publisher:
American Chemical SocietyCopyright Statement
Country of Publication:
United States
Language:
English

References (44)

Reactive multilayers fabricated by vapor deposition: A critical review journal February 2015
Thermodynamic and kinetic aspects of the crystal to glass transformation in metallic materials journal January 1986
Intermetallic phase formation during annealing of Al/Ni multilayers journal December 1994
Effect of varying bilayer spacing distribution on reaction heat and velocity in reactive Al/Ni multilayers journal April 2009
Time-resolved x-ray microdiffraction studies of phase transformations during rapidly propagating reactions in Al/Ni and Zr/Ni multilayer foils journal June 2010
Phase transformations during rapid heating of Al/Ni multilayer foils journal August 2008
In situ observation of rapid reactions in nanoscale Ni–Al multilayer foils using synchrotron radiation journal October 2010
Direct characterization of phase transformations and morphologies in moving reaction zones in Al/Ni nanolaminates using dynamic transmission electron microscopy journal May 2011
A nanocalorimetric study of the effect of composition gradients on crystallization in amorphous Cu-Zr thin films journal March 2019
A detailed study of the Al3Ni formation reaction using nanocalorimetry journal December 2017
Analysis of the reaction runaway in Al/Ni multilayers with combined nanocalorimetry and time-resolved X-ray diffraction journal August 2020
Growth kinetics of planar binary diffusion couples: ’’Thin‐film case’’ versus ’’bulk cases’’ journal April 1982
On the role of diffusion in phase selection during reactions at interfaces journal February 1992
Suppression of crystal nucleation in amorphous layers with sharp concentration gradients journal March 1990
The Competition of Intermediate Phases in the Diffusion Zone journal May 2019
Intermetallic formation at deeply supercooled Ni/Al multilayer interfaces: A molecular dynamics study journal October 2018
Structure evolution and reaction mechanism in the Ni/Al reactive multilayer nanofoils journal March 2014
Dissolution process at solid/liquid interface in nanometric metallic multilayers: Molecular dynamics simulations versus diffusion modeling journal October 2015
Modeling self-sustaining waves of exothermic dissolution in nanometric Ni-Al multilayers journal November 2016
Combustion in reactive multilayer Ni/Al nanofoils: Experiments and molecular dynamic simulation journal April 2016
Comparative study of embedded-atom methods applied to the reactivity in the Ni–Al system journal June 2017
Epitaxial growth of the intermetallic compound NiAl on low-index Ni surfaces in Ni/Al reactive multilayer nanofoils journal April 2018
Interdiffusion of Ni-Al multilayers: A continuum and molecular dynamics study journal October 2013
Suppression of homogeneous crystal nucleation of the NiAl intermetallic by a composition gradient: A molecular dynamics study journal May 2017
Fast Parallel Algorithms for Short-Range Molecular Dynamics journal March 1995
Development of an interatomic potential for the Ni-Al system journal December 2009
Reversible multiple time scale molecular dynamics journal August 1992
Polymorphic transitions in single crystals: A new molecular dynamics method journal December 1981
Constant pressure molecular dynamics algorithms journal September 1994
Rapid estimation of elastic constants by molecular dynamics simulation under constant stress journal April 2004
Systematic analysis of local atomic structure combined with 3D computer graphics journal March 1994
Structural characterization of deformed crystals by analysis of common atomic neighborhood journal September 2007
Diffusivity, Interfacial Free Energy, and Crystal Nucleation in a Supercooled Lennard-Jones Liquid journal November 2018
Competitive B2 and B33 Nucleation during Solidification of Ni 50 Zr 50 Alloy: Molecular Dynamics Simulation and Classical Nucleation Theory journal February 2019
On the derivation of the Gibbs–Helmholtz equation journal April 2016
Temperature dependence of the solid-liquid interface free energy of Ni and Al from molecular dynamics simulation of nucleation journal November 2018
Comparison of experiments and modern theories of crystal nucleation journal September 1997
Molecular Dynamics Study of the Dynamics Near the Glass Transition in Ionic Liquids journal January 2008
Numerical Simulation of Crystal Nucleation in Colloids book January 2005
Anomalously slow crystal growth of the glass-forming alloy CuZr journal April 2013
Representing potential energy surfaces by high-dimensional neural network potentials journal April 2014
Guest Editorial: Special Topic on Data-Enabled Theoretical Chemistry journal June 2018
Ab initio vibrational free energies including anharmonicity for multicomponent alloys journal July 2019
Machine Learning Interatomic Potentials as Emerging Tools for Materials Science journal September 2019