Theoretical predictions of the structural, mechanical and lattice dynamical properties of XW2 (X = Zr, Hf) Laves phases
Theoretical predictions of the structural, mechanical and lattice dynamical properties of XW2 (X = Zr, Hf) Laves phases
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XW2 (Xâ=âZr, Hf) Laves 相的结构、力学和晶格动力学性质的理论预测
DOI:
10.1080/14786435.2014.886024
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发表时间:
1928
影响因子:
1.6
通讯作者:
M.G. Pharr
中科院分区:
文献类型:
--
作者:
M. Sebastiani;K.E. Johanns;E.G. Herbert;F. Carassiti;M.G. Pharr
We have investigated the structural, mechanical and lattice dynamical properties of ZrW2and HfW2compounds in cubic C15 (space group Fd-3m), hexagonal C14 (space group P63/mmc) and C36 (space group P63/mmc) phases using generalized gradient approximation within the plane-wave pseudo-potential density functional theory. We have found that ZrW2and HfW2in cubic C15 phase are the most stable among the considered phases. From calculated elastic constants, it is shown that all phases are mechanically stable according to the elastic stability criteria. The related mechanical properties, such as bulk, shear and Young moduli, Poisson’s ratio, Debye temperature and hardness have been also calculated. The results show that ZrW2and HfW2compounds are ductile in nature with respect to theB/Gand Cauchy pressure analysis. The phonon dispersion curves, phonon density of states and some thermodynamic properties are computed and discussed exhaustively for considered phases.
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DOI:
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发表时间:
2013
期刊:
影响因子:
--
作者:
M. Sahlberg;Jonas Aangstroem;C. Zlotea;P. Beran;M. Latroche;Cesar Pay Gómez
通讯作者:
Cesar Pay Gómez
DOI:
--
发表时间:
2012
期刊:
影响因子:
--
作者:
M. Sahlberg;J. Ångström;C. Zlotea;P. Beran;M. Latroche;C. P. Gòmez
通讯作者:
C. P. Gòmez
DOI:
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发表时间:
1972
期刊:
影响因子:
--
作者:
A. Edwards
通讯作者:
A. Edwards
DOI:
--
发表时间:
2012
期刊:
影响因子:
--
作者:
S. Duman;H. M. Tütüncü
通讯作者:
H. M. Tütüncü
DOI:
--
发表时间:
1987
期刊:
影响因子:
--
作者:
M. Sluiter;P. Turchi;D. Fontaine
通讯作者:
D. Fontaine