Phase Transitions and Stability of Group IV BCC Metals |
| M.L. Verma, A. Verma Department of Physics, G.G.D.S.D. College, Palwal-121102, India and R.P.S. Rathore Department of Physics, R.B.S. College, Agra-282002, India |
| Received: April 9, 1997; revised version August 22, 1997; in final form December 18, 1997 |
| Full Text PDF |
| 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 C11 and C12 were also computed. |
| DOI: 10.12693/APhysPolA.93.479 PACS numbers: 62.20.Dc |