· 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 ...

We have just completed an etching study of iron carbides made in three different ways and of some tungsten carbide (1/32-in. equilateral triangles) single crystals. The iron carbide studies ...

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 ...