Heat treatment distortion
Heat treatment distortion is uneven cooling of components leading to stresses and deformations. It often requires mechanical rework or special measures.
Physical-Chemical Mechanism of Action
Heat treatment distortion occurs when parts cool unevenly. This leads to stresses and volume changes, especially during phase-related transformations like hardening.
Metallurgical Relevance & Risks in Welding
Heat treatment distortion can lead to stress cracks, deformation, and reduced material toughness. This can impair the part's service life and function.
Shop Practice & Action Guidelines
To avoid heat treatment distortion, parts should be cooled evenly. This can be achieved through controlled cooling techniques such as using cooling water or cooling tubes. If distortion has already occurred, mechanical rework is necessary to relieve stresses and restore the material to its original shape.