Structural and Thermodynamic Properties of TiAl intermetallics under High Pressure
Structural and Thermodynamic Properties of TiAl intermetallics under High Pressure
复制标题
TiAl金属间化合物在高压下的结构和热力学性能
DOI:
10.1088/0253-6102/57/1/21
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发表时间:
2012-01
影响因子:
3.1
通讯作者:
Hu Qian-Ku
中科院分区:
文献类型:
--
作者:
Li Xu-Sheng;Wang Hai-Yan;Li Chang-Yun;Mi Guo-Fa;Hu Qian-Ku
The structural and thermodynamic properties of TiAl intermetallics under high pressure have been investigated by ab initio plane-wave pseudopotential density functional theory method. It is found that the ratio of lattice parameter c to a keeps almost constant with a value of 1.02 under the pressure from 0 to 20 GPa, which agrees well with the experimental results. With the pressure increasing from 20 to 45 GPa the values of c/a decrease almost linearly from 1.02 to 0.99. These calculated results indicate under low pressure the variation rate for a-axis is almost the same to that for c-axis, but under higher pressure the variation for a-axis is smaller than along c-axis. Through the quasi-harmonic Debye model, the equation of state (EOS) of TiAl intermetallics, as well as the thermal expansion and heat capacity at various pressures and temperatures are also studied.
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DOI:
10.1088/0965-0393/2/5/003
发表时间:
1994-09
影响因子:
1.8
作者:
D. Farkas
通讯作者:
D. Farkas
DOI:
10.1109/proc.1963.2730
发表时间:
1963-12
期刊:
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影响因子:
--
作者:
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通讯作者:
C. W. Carnahan
影响因子:
2.2
作者:
S. Kurth;J. Perdew
通讯作者:
S. Kurth;J. Perdew
影响因子:
3.7
作者:
MONKHORST, HJ;PACK, JD
通讯作者:
PACK, JD
影响因子:
3.7
作者:
MONKHORST, HJ;PACK, JD
通讯作者:
PACK, JD