Statistical Mechanics of Microstructure Evolution

小行星9214852 对二元两相合金微观组织的几何演化和动力学进行了实验和理论研究。 研究的两个主要方向是：（1）建立一个合适的数据统计框架，用于描述复杂三维微结构从初始相变状态向热力学平衡演化的平均几何轨迹;和（2）伴随实验，其提供精确的体视学数据以量化在明确限定的组合物条件下发生的观察到的微观结构变化，显微组织轨迹本身在几何相平面上定量描述”。 实验包括等时退火研究，有和没有施加磁场，以消除微对流固液合金，然后用一种新的图像处理工具进行体视学分析。 这项研究应该增加对复杂的、技术上重要的系统在加工过程中如何在几何和动力学上演变并接近热力学平衡的基本理解。 ***

9214852 Glicksman Experimental and theoretical studies are conducted on the geometric evolution and kinetics of microstructures in two-phase binary alloys. The two main thrusts of the research are: (1) creation of a suitable data statistical framework for describing the average geometrical trajectories of complex 3-dimensional microstructures evolving from their initial phase transformation states toward thermodynamic equilibrium; and (2) companion experiments which provide precision stereological data to quantify observed microstructural changes occurring under well defined conditions of composition, temperature, phase fraction, etc. The microstructural trajectories are themselves described quantitatively on a geometric phase plane". Experiments include isochronal annealing studies, both with and without an applied magnetic field to eliminate microconvection in solid-liquid alloys, then analyzed stereologically with a new image processing tool. %%% This study should add fundamental understanding of how complex, technologically important systems evolve geometrically and kinetically during processing and approach thermodynamic equilibrium. ***