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Title: First-principles phase stability at high temperatures and pressure in Nb90Zr10 alloy

Abstract

The phase stability of Nb90Zr10 alloy at high temperatures and compression is explored by means of first-principles electronic-structure calculations. Utilizing the self-consistent ab initio lattice dynamics (SCAILD) approach in conjunction with density-functional theory, we show that pressure-induced mechanical instability of the body-centered cubic phase, which results in formation of a rhombohedral phase at around 50 GPa, will prevail significant heating. As a result, the body-centered cubic structure will recover before melting at ~1800 K.

Authors:
ORCiD logo [1];  [1]
  1. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Publication Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1331454
Alternate Identifier(s):
OSTI ID: 1397553
Report Number(s):
LLNL-JRNL-695533
Journal ID: ISSN 0925-8388
Grant/Contract Number:  
AC52-07NA27344
Resource Type:
Accepted Manuscript
Journal Name:
Journal of Alloys and Compounds
Additional Journal Information:
Journal Volume: 690; Journal Issue: C; Journal ID: ISSN 0925-8388
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; transition metals; phase stability; alloys; phonons; density-functional theory

Citation Formats

Landa, A., and Soderlind, P. First-principles phase stability at high temperatures and pressure in Nb90Zr10 alloy. United States: N. p., 2016. Web. doi:10.1016/j.jallcom.2016.08.134.
Landa, A., & Soderlind, P. First-principles phase stability at high temperatures and pressure in Nb90Zr10 alloy. United States. https://doi.org/10.1016/j.jallcom.2016.08.134
Landa, A., and Soderlind, P. Thu . "First-principles phase stability at high temperatures and pressure in Nb90Zr10 alloy". United States. https://doi.org/10.1016/j.jallcom.2016.08.134. https://www.osti.gov/servlets/purl/1331454.
@article{osti_1331454,
title = {First-principles phase stability at high temperatures and pressure in Nb90Zr10 alloy},
author = {Landa, A. and Soderlind, P.},
abstractNote = {The phase stability of Nb90Zr10 alloy at high temperatures and compression is explored by means of first-principles electronic-structure calculations. Utilizing the self-consistent ab initio lattice dynamics (SCAILD) approach in conjunction with density-functional theory, we show that pressure-induced mechanical instability of the body-centered cubic phase, which results in formation of a rhombohedral phase at around 50 GPa, will prevail significant heating. As a result, the body-centered cubic structure will recover before melting at ~1800 K.},
doi = {10.1016/j.jallcom.2016.08.134},
journal = {Journal of Alloys and Compounds},
number = C,
volume = 690,
place = {United States},
year = {Thu Aug 18 00:00:00 EDT 2016},
month = {Thu Aug 18 00:00:00 EDT 2016}
}

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Cited by: 5 works
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Works referencing / citing this record:

Anharmonic lattice dynamics of bcc sodium under high pressures
journal, January 2018

  • Li, Shasha; Wang, Chen; Chen, Yue
  • Physical Chemistry Chemical Physics, Vol. 20, Issue 21
  • DOI: 10.1039/c8cp02086h