The Effect of Pressure on Martensitic Phase Transformations
Stability of the crystal structure is determined by the competition between attractive and repulsive interatomic forces. Using many-body exponential potentials it can be shown that the bcc structure corresponding to austenitic phases is more stable for low values of the q-parameter characterising the attractive forces for a fixed value of the p-parameter describing the repulsive forces. The structural stability can be changed with the acting pressure that may alter the martensitic transformations from the bcc-austenite to a close-packed structure. The effect of pressure is examined in a generic model employing many-body potentials and the results are compared with ab initio calculations for zirconium representing a monoatomic material with displacive phase transformation.
Pietro Vincenzini, Stefano Besseghini, Shuichi Miyazaki, Eckhard Quandt and Minoru Taya
V. Paidar et al., "The Effect of Pressure on Martensitic Phase Transformations", Advances in Science and Technology, Vol. 78, pp. 13-18, 2013