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

本研究涉及本构方程的发展 和计算程序，以改善科学基础， 金属热变形工艺分析，特别是 注意力集中在预测材料加工缺陷， 由于高孔隙率和变形局部化而出现。 的 这项研究的结果将有助于分析 致密材料的变形和逐渐损坏， 热变形处理的分析（例如，热等 通过压实生产的多孔金属的热等静压处理， 金属粉末的烧结。

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.