Body-centered cubic lattice
The body-centered cubic lattice has atoms at the corners and one central atom per cube. It is typical for ferrite at room temperature, shows low density and high strength.
Physical-Chemical Mechanism
Body-centered cubic structure has atoms at each corner and one in the center of a cube. This type is common in metals like ferrite and provides high strength thanks to strong atomic bonding.
Metallurgical Relevance & Welding Risks
In welding, fast cooling can cause problems with the BCC structure. It can lead to a hard microstructure, hurting toughness and shape stability. Fast cooling can also cause hot cracking.
Workshop Practice & Actions
To minimize the risk of hot cracking and an over-hard structure, control the cooling. Use a cooling wall or cooling gases. Set the cooling rate so the structure has enough time to stabilize and avoids excessive hardness.