Anisotropy of the solid–liquid interface properties of the Ni–Zr B33 phase from molecular dynamics simulation
Journal Article
·
· Philosophical Magazine (2003, Print)
- Ames Lab., Ames, IA (United States)
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), Journal Name: Philosophical Magazine (2003, Print) Journal Issue: 2 Vol. 95; ISSN 1478-6435
- Publisher:
- Taylor & FrancisCopyright Statement
- Country of Publication:
- United States
- Language:
- English
Similar Records
Competitive B2 and B33 Nucleation during Solidification of Ni 50 Zr 50 Alloy: Molecular Dynamics Simulation and Classical Nucleation Theory
Appearance of metastable B2 phase during solidification of Ni 50 Zr 50 alloy: electrostatic levitation and molecular dynamics simulation studies
Appearance of metastable B2 phase during solidification of Ni50Zr50 alloy: electrostatic levitation and molecular dynamics simulation studies
Journal Article
·
Tue Feb 26 19:00:00 EST 2019
· Journal of Physical Chemistry. C
·
OSTI ID:1506100
Appearance of metastable B2 phase during solidification of Ni 50 Zr 50 alloy: electrostatic levitation and molecular dynamics simulation studies
Journal Article
·
Tue Feb 03 23:00:00 EST 2015
· Journal of Physics. Condensed Matter
·
OSTI ID:1233226
Appearance of metastable B2 phase during solidification of Ni50Zr50 alloy: electrostatic levitation and molecular dynamics simulation studies
Journal Article
·
Tue Feb 03 19:00:00 EST 2015
· Journal of Physics. Condensed Matter
·
OSTI ID:1418495