Peak Grain Size
The largest grain size in a metal, determined by thermal treatments or deformation. It influences brittleness and the brittle fracture-prone area in the component.
Physical-Chemical Mechanism of Action
The peak grain size is the largest grain in a metal, resulting from thermal treatments or mechanical deformation. It influences the crystal structure and can lead to areas prone to brittle fracture.
Metallurgical Relevance & Risks in Welding
A large peak grain size increases susceptibility to brittleness and brittle fractures. If handled incorrectly during welding, this can lead to cracks or distortion in the component.
Workshop Practice & Action Instructions
To achieve an optimal peak grain size, control the temperature and time of the thermal treatment as well as the expansion during welding. For metals highly prone to brittle fracture, careful control is essential.