Peritectoid Transformation
Peritectoid transformation: In this transformation, two solid phases react and form a new phase through solid-state diffusion. This process is slow.
Physical-Chemical Mechanism of Action
In the peritectoid transformation, two different solid metal phases react under diffusion conditions and form a new phase. The reaction occurs by the movement of atoms between the phases, which requires time.
Metallurgical Relevance & Risks in Welding
This transformation can lead to deformation or non-uniformities in the microstructure if not controlled. Too rapid cooling can prevent diffusion and lead to incomplete transformation, affecting mechanical properties.
Workshop Practice & Action Guidelines
To ensure a successful peritectoid transformation, it is important to control the cooling of the welding process. This can be achieved by choosing the appropriate shielding gas and the right cooling strategy. The temperature should drop slowly to allow enough time for diffusion.