Order-disorder phase transition
Order-disorder phase transition: Below a critical temperature, atoms organize in a solid solution lattice, which strongly changes electrical and mechanical properties.
Physicochemical Mechanism of Action
In certain solid solutions, atoms can organize at a specific temperature and distribute themselves onto ordered lattice sites. This transition from a disordered to an ordered state changes the atomic arrangement and thus the electrical and mechanical properties of the material.
Metallurgical Relevance & Welding Risks
An order-disorder phase transition can lead to changes in hardness and strength. If mishandled during the welding process, this can result in undesirable mechanical properties or cracking in the material.
Workshop Practice & Procedures
To avoid the order-disorder phase transition, pay attention to the correct welding temperature and the material's hold time. For special materials, it is important to know the critical temperature and ensure it is not exceeded. Use suitable welding processes and parameters to maintain the desired microstructure and mechanical properties.