Static yield point
The static yield point is the point at which a material deforms plastically and changes shape. It shows the maximum stress that occurs without forced displacement.
Physical-chemical mechanism of action
The static yield strength is the stress limit beyond which a material deforms plastically. This point marks the transition from elastic to plastic behavior of the material.
Metallurgical relevance & welding risks
During welding, the static yield strength can be influenced by various factors such as temperature and stress. Too high a stress value or too fast cooling can cause the material to exceed its static yield strength and deform plastically. This can lead to cracks or distortion in the weld metal.
Workshop practice & action instructions
To account for the static yield strength, it is important to carefully control stress and temperature during welding. For high-stress processes like MIG welding, slow cooling should be ensured to minimize the risk of plastic deformation.