work hardening coefficient
The strain hardening coefficient indicates how much a metal's resistance increases during plastic deformation due to dislocation buildup. It determines behavior in the forming range after exceeding the yield point.
Physical-Chemical Mechanism of Action
The hardening coefficient describes the increase in a metal's resistance caused by plastic deformation. This happens through dislocation buildup, where atomic dislocations move and block each other.
Metallurgical Relevance & Risks in Welding
A high hardening coefficient can lead to increased hardness and lower formability. This can cause problems during forming or weld formation, as the metal becomes difficult to plastically deform and cracks can occur.
Workshop Practice & Instructions
To control the hardening coefficient, pay attention to the relevant values when selecting the metal and welding process. For high-strength materials, careful control of deformation is necessary to avoid cracks.