Strain Energy
Stored strain energy is the energy stored in a crystal lattice when deformed. It drives the lattice to recovery and recrystallization.
Physikalisch-chemischer Wirkmechanismus
Strain energy is generated by the deformation of crystal lattices, where atomic positions deviate from their natural order. These deviations store energy that acts as a driving force for the return to the original state.
Metallurgical Relevance & Welding Risks
During welding, strain energy can be stored in the metals. This energy can lead to stresses that may cause cracks or fractures if not properly relieved. Excessive stresses can also impair the mechanical properties of the material.
Werkstattpraxis & Handlungsanweisungen
To minimize strain energy and ensure that the material is not excessively distorted after welding, the following measures should be taken:
• Use a suitable welding method and parameters.
• Ensure that the workpieces are properly prepared (e.g., by preheating).
• Cool the workpiece in a controlled manner to minimize stresses.