Cyclic Deformation Behavior
Cyclic deformation behavior refers to the resistance of materials under repeated strain reversals. It leads to cyclic hardening or softening.
Physicochemical mechanism of action
Under cyclic strain reversal, the microstructures in the material change, leading to a change in material resistance. This can be caused by micromechanical damage or by so-called "strength exhaustion."
Metallurgical relevance & risks in welding
Cyclic deformation behavior is especially important for materials that work in stress fields with high cyclic loads. Improper handling during welding can lead to increased risk of cracks or reduced service life.
Workshop practice & action items
To minimize cyclic deformation behavior, it's important to keep strain reversals as low as possible during welding. This can be achieved by carefully selecting welding parameters and using an optimal cooling strategy.