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

高温下流动局部化和延性断裂的实验和计算研究及其在热加工性中的应用

• 批准号: 8808556
• 负责人: David Parks
• 金额: --
• 依托单位: Massachusetts Institute of Technology
• 依托单位国家: 美国
• 项目类别: Continuing grant
• 财政年份: 1988
• 资助国家: 美国
• 起止时间: 1988-08-01 至 1992-01-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8808556&HistoricalAwards=false
• 关键词: Experimental; Computational; Study; Flow; Localization

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.

本研究涉及本构方程和计算程序的开发，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而产生的材料加工缺陷。 这项研究的结果将有助于分析致密材料的变形和渐进损伤，也可用于分析通过金属粉末压实和烧结产生的多孔金属的热变形加工（例如热等静压加工 - HIP'ing）。