Influence of the Grain Boundary Phase Transitions on the Diffusion-Related Properties

Abstract

Grain boundary (GB) phase transitions can change drastically the properties of polycrystals. The GB wetting phase transition can occur in the two-phase area of the bulk phase diagram where the liquid (L) and solid (S) phases are in equilibrium. The GB wetting tie-line appears in the L+S area. Above the temperature of the GB wetting phase transition a GB cannot exist in equilibrium contact with the liquid phase. The liquid phase has to substitute the GB and to separate both grains. The experimental data on GB wetting phase transitions in the

Interaction of liquid and solid gallium with thin silver films: Synchronized spreading and penetration

“…It is known that GBG and wetting can also occur in "solid/solid" metal couples [37,38]. This is so in particular when the diffusion mobility in one of the metals, say "A", is much higher than in another metal, so that "A" can act as a fast diffusion pathway, in this respect playing the role of the liquid phase in liquid-solid couples.…”

The Influence of Quenching Baths on Grain Boundary Wetting Transition in Sn–25 at% In alloy

“…GB wetting phenomena have been studied and published in several papers and books. The wetting behavior of GBs is affected by temperature, pressure and misorientation [10][11][12]. Straumal et al…”