Intercrystalline Phase

Physical-chemical mechanism of action

Intergranular phases form by diffusion of atoms or ions at boundaries between adjacent crystals. These phases can consist of various elements that do not fully integrate into the host metal.

Metallurgical relevance & risks during welding

Intergranular phases can accelerate corrosion and affect fracture behavior. They can arise from incomplete melting processes or chemical compounds that precipitate at crystal boundaries during cooling.

Workshop practice & instructions

To avoid intergranular phases, it is important to ensure a clean melting process and controlled cooling. Use high-quality materials and remove chemical compounds or dirt from the metal before welding.