Pressure-shear impact-induced phase transformations in Cu-14.44Al-4.19Ni single crystals

1995 ◽  
Author(s):  
J. C. Escobar ◽  
R. J. Clifton
Keyword(s):  
Phase Transformations ◽  
Single Crystals

scholarly journals Internal melt figures in ice by rapid adiabatic compression

1994 ◽  
Vol 40 (134) ◽  
pp. 132-134
Author(s):  
R.E. Gagnon ◽  
C. Tulk ◽  
H. Kiefte
Keyword(s):  
Phase Transformations ◽  
Grain Boundaries ◽  
Single Crystals ◽  
Adiabatic Compression ◽  
Air Bubbles ◽  
Water Ice ◽  
Deep Focus ◽  
And Behavior ◽  
First Time

AbstractSingle crystals and bicrystals of water ice have been adiabatically pressurized to produce, and clearly illustrate, two types of internal melt figures: (1) dendritic figures that grow from nucleation imperfections on the specimen’s surface, or from air bubbles at grain boundaries, into the ice as pressure is elevated; and (2) compression melt fractures, flat liquid-filled disks, that nucleate at imperfections in the crystal and grow with the application of pressure eventually to sprout dendritic fingers at the periphery. The transparency of the ice permitted visualization of the growth and behavior of the figures, and this could be an important tool in understanding the role of phase transformations in deep-focus earthquakes. Correlation between figure size and pressure is noted for the first time.

Pulsed laser-induced phase transformations in CdTe single crystals

2005 ◽  
Vol 248 (1-4) ◽  
pp. 259-263 ◽  
Author(s):  
E. Gatskevich ◽  
G. Ivlev ◽  
P. Přikryl ◽  
R. Černý ◽  
V. Cháb ◽  
...  
Keyword(s):  
Phase Transformations ◽  
Single Crystals ◽  
Pulsed Laser

Phase transformations, anisotropic pyroelectric energy harvesting and electrocaloric properties of (Pb,La)(Zr,Sn,Ti)O3 single crystals

2017 ◽  
Vol 19 (21) ◽  
pp. 13534-13546 ◽  
Author(s):  
Fangping Zhuo ◽  
Qiang Li ◽  
Jinghan Gao ◽  
Qingfeng Yan ◽  
Yiling Zhang ◽  
...  
Keyword(s):  
Phase Transition ◽  
Energy Harvesting ◽  
Phase Transformations ◽  
Single Crystals ◽  
Structural Phase Transition ◽  
Structural Phase ◽  
Electrical Energy ◽  
Flux Method

(Pb,La)(Zr,Sn,Ti)O3 single crystals are grown via the flux method. The structural phase transition, thermal–electrical energy harvesting and electrocaloric properties of the PLZST crystals with [100], [110], and [111] crystallographic directions are studied systematically.

Phase transformations and magnetic properties of MnAlC single crystals

1985 ◽  
Vol 88 (2) ◽  
pp. 587-594 ◽  
Author(s):  
M. A. Uimin ◽  
A. E. Ermakov ◽  
O. B. Andreeva ◽  
E. I. Teitel ◽  
V. M. Gundyrev
Keyword(s):  
Magnetic Properties ◽  
Phase Transformations ◽  
Single Crystals

Phase-Dield Simulation of Rhombohedral and Tetragonal Phases in Ferroelectric Single Crystals

Aerospace ◽  
2006 ◽  
Author(s):  
T. Liu ◽  
C. S. Lynch
Keyword(s):  
Free Energy ◽  
Phase Transformations ◽  
Single Crystals ◽  
Electric Fields ◽  
Tetragonal Phase ◽  
Ferroelectric Materials ◽  
Integration Scheme ◽  
Ferroelectric Crystal ◽  
Domain Structures ◽  
Tdgl Equation

Ferroelectric materials exhibit spontaneous polarization and domain structures below the Curie temperature. In this work the phase field approach has been used to simulate phase transformations and the formation of ferroelectric domain structures. The evolution of phases and domain structures was simulated in ferroelectric single crystals by solving the time dependent Ginzburg-Landau (TDGL) equation with polarization as the order parameter. In the TDGL equation the free energy of a ferroelectric crystal is written as a function of polarization and applied fields. Change of temperature as well as application of stress and electric fields leads to change of the free energy and evolution of phase states and domain structures. In this work the finite difference method was implemented for the spatial description of the polarization and the temporal evolution of polarization field was computed by solving the TDGL equation with an explicit time integration scheme. Cubic to tetragonal, cubic to rhombohedral and rhombohedral to tetragonal phase transformations were modeled, and the formation of domain structures was simulated. Field induced polarization switching and rhombohedral to tetragonal phase transition were simulated.

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