Nickel Superalloy Edge Distortion
Nickel superalloy edge distortion is a deformation on the surface of weld microstructures caused by high hot strength and stresses during welding. This leads to uneven strain and can result in defects or cracks.
Physical-Chemical Mechanism of Action
Nickel superalloy edge distortion occurs due to high hot strength and stresses in the structure during welding. These properties prevent uniform deformation of the materials, leading to uneven distortion on the surface.
Metallurgical Relevance & Welding Risks
Edge distortion can lead to defects in weld microstructures and increases susceptibility to cracking. This can cause problems especially under high mechanical loads or aggressive chemical environments.
Workshop Practice & Instructions
To minimize edge distortion, it is important to carefully pre-treat the material before welding. This may include tempering or annealing the material to reduce stresses. Additionally, when selecting the welding process and parameters, the specific properties of nickel superalloys should be considered.