Non-equilibrium interface kinetics during rapid solidification

Non-Equilibrium Solidification of Undercooled Metallic Melts

If a liquid is undercooled below its equilibrium melting temperature an excess Gibbs free energy is created. This gives access to solidification of metastable solids under non-equilibrium conditions. In the present work, techniques of containerless processing are applied. Electromagnetic and electrostatic levitation enable to freely suspend a liquid drop of a few millimeters in diameter. Hetero...

Enzyme kinetics. Rapid-equilibrium applications of Mathematica.

Non-equilibrium solidification of concentrated Fe–Ge alloys

The solidification of concentrated alloys containing ordered compounds is less well understood. These alloys often exhibit complex phase hange like peritectic reaction during liquid to solid transformation. The Fe-rich part of Fe–Ge binary alloy system consists of several critical oints and ordered–disorder transitions and can be used as a model system to study the effect of departure from equi...

Kinetic modeling of phase selection during non - equilibrium 48 solidification of a tungsten – carbon system

53 Abstract 54 A dynamic computational model developed within the context of the classical theory of phase evolution was applied 55 to the W–C system to simulate the kinetics of phase selection during non-equilibrium solidification at 50%-C between 56 the thermodynamically stable WC and the metastable WC1 x and W2C. The kinetic variables used in the model are 7 directly obtained from the free e...

Structural Properties of Liquid SiC during Rapid Solidification

The rapid solidification of liquid silicon carbide (SiC) is studied by molecular dynamic simulation using the Tersoff potential. The structural properties of liquid and amorphous SiC are analyzed by the radial distribution function, angular distribution function, coordination number, and visualization technology. Results show that both heteronuclear and homonuclear bonds exist and no atomic seg...