Recrystallization

Metallurgy Fundamentals

Определение

The process by which new, strain-free grains nucleate and grow within a previously cold-worked or deformed metal when it is annealed above the recrystallization temperature, restoring ductility and reducing hardness.

Подробное объяснение

The recrystallization temperature is typically 0.3 to 0.5 times the melting temperature (in Kelvin) and depends on the degree of prior cold work, purity, and alloy content. Heavily deformed metals recrystallize at lower temperatures and produce finer grain sizes. Controlling the annealing temperature and time after cold rolling allows metallurgists to tailor the final grain size and mechanical properties of sheet and strip products for specific forming and strength requirements.