Recrystallization of Two-Phase Alloys and the Experimental Determination of Particle Pinning Forces

这项研究考察了含有第二相粒子的金属合金的再结晶动力学。随着塑性应变的增加，某些细小颗粒合金的再结晶行为表现出从抑制到迟缓再到加速的变化。这项研究集中在初级再结晶过程中颗粒可能产生的钉扎力。实验结果将与用于解释再结晶动力学的模型进行比较。量热法和透射电子显微镜被用来跟踪与再结晶过程相关的潜在机制。这项研究有助于理解金属合金的再结晶过程，并应建立一个小而硬的颗粒对再结晶动力学影响的定量模型。这些信息将更好地控制加工过程中的合金组织。

This research examines the recrystallization kinetics in metal alloys that have second phase particles. Some alloys containing fine particles can display behavior changing from suppression to retardation to acceleration of recrystallization with increasing plastic strain. This study centers on the pinning forces that can occur from particles during primary recrystallization. The experimental results will be compared to a model formulated to explain the recrystallization kinetics. Calorimetry and transmission electron microscopy are employed to follow the underlying mechanisms associated with the recrystallization process. The research contributes to an understanding of recrystallization processes in metal alloys and should result in a quantitative model of the effect of small, hard particles on recrystallization kinetics. This information will provide greater control of alloy microstructure during processing.