The effectiveness of thermomechanical treatments relies on several interdependent physical metallurgical mechanisms:

: Deformation at specific temperatures induces recrystallization or prevents grain growth, leading to a finer grain structure. According to the Hall-Petch relationship, smaller grains significantly increase both yield strength and fracture toughness.

: In microalloyed steels, TMP facilitates the fine precipitation of carbides or nitrides. These particles act as barriers to dislocation movement, further bolstering the steel’s resistance to deformation. Key Stages of Treatment