Plastic Strain Anisotropy
Plastic strain anisotropy describes that a material deforms plastically differently in different directions. This affects formability and can lead to uneven stresses.
Physical-Chemical Mechanism of Action
Plastic strain anisotropy arises from the different orientation of crystal paths within a material. This orientation influences how strongly the material can be deformed in certain spatial directions.
Metallurgical Relevance & Risks in Welding
During forming or welding processing, uneven plastic deformability can lead to stress zones. These stresses can cause cracks or impair the hardness and toughness of the material.
Workshop Practice & Action Guidelines
To minimize plastic strain anisotropy, it is important to form the material uniformly. This can be achieved by careful selection of forming direction and technique. In welding, care should be taken to ensure that stresses are evenly distributed, e.g., by correct heat treatment after the processing step.