Macroscopic Residual Stress Distribution
The macroscopic residual stress distribution describes the stress pattern across a component. It arises from uneven plastic deformation or thermal differences and can lead to cracking.
Physical-Chemical Mechanism of Action
Macroscopic residual stress distribution refers to stresses that extend over the entire volume of a component. They arise from uneven plastic deformation or temperature differences within the material.
Metallurgical Relevance & Welding Risks
High macroscopic residual stresses can lead to cracking and fracture, especially when components are under mechanical load. Uneven deformation or thermal gradients can build up stress that exceeds the material's capacity.
Shop Practice & Action Guidelines
To minimize macroscopic residual stresses, it's important to ensure uniform plastic deformation and controlled cooling. When welding components with different materials or when there is a large stress range, additional measures such as using stress-relief treatments or stress equalization techniques should be considered.