Crystal Structures for Metallic Elements

The crystals of most metals have highly symmetrical structure. The most common types of lattices are (a) Body Centred Cubic Structure (BCC) (b) Face Centred Cubic Structure (FCC) (c) Hexagonal Close Packed Structure (HCP) Body Centred Cubic Structure (BCC) – In this type of structure, atoms are located at the corners of the cube and one atom at its centre. This type of unit cell is found in metals like lithium, sodium, potassium, barium, vanadium etc. Face Centred Cubic Structure (FCC) – In this type of structure, atoms are located at the…

Read More

Iron-Carbon Equilibrium Diagram

Alloys of the Iron carbon system are of the most vital importance to the modern industry due to their extensive, versatile applications. The Iron carbon system provides the most prominent example of heat treatment and property alteration based on the transformation from one form to other on application of heat and eutectoid decomposition. Because of its outstanding importance, the heat treatment of the iron-carbon system has been studied in more details than most alloy system. Types of steels and cast iron depend upon the percentage of carbon present in the…

Read More