Autor: Verma, A. - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Phase Transitions and Stability of Group IV BCC Metals
Autorzy:: Verma, M. L.
Verma, A.
Rathore, R. P. S.
Powiązania:: https://bibliotekanauki.pl/articles/1968848.pdf
Data publikacji:: 1998-03
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 62.20.Dc
Opis:: Born stability criteria were employed in the framework of extended generalised exponential potential to calculate the theoretical strength and range of stability of a perfect uniaxially stressed crystal lattice of group IV bcc metals: titanium, zirconium, and hafnium. The analysis depicts two ranges of stability, a bcc phase and a body centered tetragonal phase. The computed value of theoretical strength and strain of bcc Ti, Zr and Hf agree satisfactorily with the experimental limits. The second-order elastic constants C$\text{}_{11}$ and C$\text{}_{12}$ were also computed.
Źródło:: Acta Physica Polonica A; 1998, 93, 3; 479-489
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 2.

Tytuł:: Elastic Behaviour and Lattice Vibrations in bcc V and Nb
Autorzy:: Verma, A.
Verma, M. L.
Rathore, R. P. S.
Powiązania:: https://bibliotekanauki.pl/articles/1946133.pdf
Data publikacji:: 1996-09
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 63.20.Dj
62.20.Dc
Opis:: A model is developed by extending the generalised form of exponential potential known as extended generalised exponential potential to account for: (a) a realistic realization of interactions in all separations in general and that of small separations in particular, (b) three-body and electronic effects into the interaction in an alternative and simpler form, (c) a model free from usual fitting procedure. The model is employed to compute the cohesive energy, phonon spectra and second- and third-order elastic constants for group VA bcc metals V and Nb. The computed results showing good agreement with the experimental findings lend reliability and credibility to the potential.
Źródło:: Acta Physica Polonica A; 1996, 90, 3; 547-556
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 3.

Tytuł:: Effect of Nucleation on the Stability of BCC Metals
Autorzy:: Verma, A.
Verma, M. L.
Rathore, R. P. S.
Powiązania:: https://bibliotekanauki.pl/articles/1963285.pdf
Data publikacji:: 1997-03
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 62.20.Dc
Opis:: Numerical calculations are made of theoretical strength and range of stability of a perfect uniaxially stressed crystal lattice of bcc vanadium, niobium and tantalum in the framework of extended generalised exponential potential by applying Born stability criteria. Two ranges of stability, a bcc phase and a body centered tetragonal phase are found to exist. The computed values of theoretical strength and strain of bcc V, Nb and Ta agree reasonably well with the experimental limits.
Źródło:: Acta Physica Polonica A; 1997, 91, 3; 583-596
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

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