Shingle-like Recrystallization
Tile-like recrystallization is a phase change where old crystals are replaced by new, overlapping stress-free crystallites. This can lead to an improvement in mechanical properties.
Physical-Chemical Mechanism of Action
In tile-like recrystallization, new crystallites form that overlap and create a stress-free structure. This process can be triggered by increased temperatures or specific chemical environments.
Metallurgical Relevance & Risks in Welding
This recrystallization can lead to an improvement in mechanical properties such as strength and toughness. However, it can also lead to changes in the microstructure and possibly stresses in the material, which can cause cracks or damage if handled incorrectly.
Workshop Practice & Instructions
To promote tile-like recrystallization, the weld pool can be raised with temperature control. It is important to carefully regulate cooling time and temperature to ensure a uniform and stress-free crystal structure. For special materials, the use of recrystallization agents can also be considered.