graingrowthdominated
Graingrowthdominated is a term used in materials science to describe a regime of microstructural evolution in polycrystalline materials in which grain growth is the dominant mechanism shaping the grain size distribution during thermal treatment. It contrasts with recrystallization-dominated or phase-transformation-dominated regimes.
Mechanism: In this regime, migration of grain boundaries driven by curvature reduces total boundary area and
Conditions: It occurs at elevated temperatures and sufficiently long times where stored energy from prior deformation
Kinetics and observations: The average grain size often follows a parabolic growth law with time, d^2 ≈
Implications: Controlling graingrowthdominated regimes is important for properties such as strength, toughness, and conductivity. Processing strategies
Related concepts: grain growth, recrystallization, abnormal grain growth, Zener pinning.