Enhanced undercooling capability
The ability of a melt to cool faster and more strongly than usual without phase changes.
Physicochemical mechanism of action
A metal has a higher undercooling capability when it cools faster and more strongly than normal for its composition. This can be achieved through special additives or chemical modifications.
Metallurgical relevance & welding risks
Increased undercooling capability can lead to higher hardness and lower ductility. This increases susceptibility to cracking and fracture, especially with careless handling or if the metal is not properly pre-treated.
Workshop practice & action guidelines
To utilize increased undercooling capability, pay attention to correct welding temperature and cooling rate. Use special additives or metals with this property when required for the desired result. If necessary, perform careful pre-treatment to control hardness.