· Interphase boundaries separate materials of different composition. Boundaries of this type occur frequently in technical materials. · The right hand gray region in the photograph is Austenite, an ...

Austenite is a solid and, in general, will be polycrystalline. The formation of ferrite and iron carbide will start at the austenite grain boundaries and the final pearlite microstructure will have ...

IT is generally accepted that the lattice parameter of retained austenite in quenched iron—carbon alloys increases continuously and linearly with the increase of carbon content. So far ...