Experimental and Computational Study of Flow Localization and Ductile Fracture at High Temperatures, with Application to Hot Workability

本研究旨在发展本构方程和计算程序，以改善金属热变形加工分析的科学基础，特别关注预测因高孔隙率和变形局部化而产生的材料加工缺陷。这一研究结果将有助于分析致密材料的变形和渐进损伤，也将有助于分析金属粉末压制和烧结产生的多孔金属的热变形工艺(如热等静力加工-热等静压)。

This research deals with the development of constitutive equations and computational procedures for improving the scientific basis for the analysis of hot deformation processing of metals, with special attention focused on predicting material processing defects which arise because of high porosity and deformation localization. The results from this research will be useful for the analysis of deformation and progressive damage of dense materials, and also for the analysis of hot deformation processing (e.g., hot isostatic processing - HIP'ing) of porous metals produced by compaction and sintering of metal powders.