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Title: Anisotropy of the solid–liquid interface properties of the Ni–Zr B33 phase from molecular dynamics simulation

Journal Article · · Philosophical Magazine (2003, Print)

Solid–liquid interface (SLI) properties of the Ni–Zr B33 phase were determined from molecular dynamics simulations. In order to perform these measurements, a new semi-empirical potential for Ni–Zr alloy was developed that well reproduces the material properties required to model SLIs in the Ni50.0Zr50.0 alloy. In particular, the developed potential is shown to provide that the solid phase emerging from the liquid Ni50.0Zr50.0alloy is B33 (apart from a small fraction of point defects), in agreement with the experimental phase diagram. The SLI properties obtained using the developed potential exhibit an extraordinary degree of anisotropy. It is observed that anisotropies in both the interfacial free energy and mobility are an order of magnitude larger than those measured to date in any other metallic compound. Moreover, the [0 1 0] interface is shown to play a significant role in the observed anisotropy. Our data suggest that the [0 1 0] interface simultaneously corresponds to the lowest mobility, the lowest free energy and the highest stiffness of all inclinations in B33 Ni–Zr. This finding can be understood by taking into account a rather complicated crystal structure in this crystallographic direction.

Research Organization:
Ames Laboratory (AMES), Ames, IA (United States)
Sponsoring Organization:
USDOE
Grant/Contract Number:
AC02-07CH11358
OSTI ID:
1239832
Report Number(s):
IS-J 8908
Journal Information:
Philosophical Magazine (2003, Print), Vol. 95, Issue 2; ISSN 1478-6435
Publisher:
Taylor & FrancisCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 52 works
Citation information provided by
Web of Science

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Effect of temperature and stress on creep behavior of ultrafine grained nanocrystalline Ni-3 at% Zr alloy journal February 2017
Influence of Stress on Creep Behavior of Ni60Zr40 Glass-Reinforced Ni Nanocomposite Investigated by Atomistic Simulations journal June 2019
Curie-Weiss behavior of liquid structure and ideal glass state journal December 2019
Solid-liquid interface free energies of pure bcc metals and B2 phases journal April 2015
Evaluation of copper, aluminum, and nickel interatomic potentials on predicting the elastic properties journal June 2016
Stress-induced solid-state amorphization of nanocrystalline Ni and NiZr investigated by atomistic simulations journal January 2018
Polytetrahedral structure and glass-forming ability of simulated Ni–Zr alloys journal October 2018
Temperature dependence of the solid-liquid interface free energy of Ni and Al from molecular dynamics simulation of nucleation journal November 2018
Dynamic formation and destruction process of stacking fault tetrahedra in single-crystal Ni during nanoscale cryo-rolling journal July 2019
Determination of surface properties and elastic constants of FCC metals: a comparison among different EAM potentials in thin film and bulk scale journal October 2018
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