Control of Microstructure Against Strain Localization During Deformation Processing

变形加工过程中微观结构对应变局部化的控制

• 批准号: 9202513
• 负责人: John Bassani
• 金额: --
• 依托单位: University of Pennsylvania
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1992
• 资助国家: 美国
• 起止时间: 1992-09-01 至 1996-02-29
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9202513&HistoricalAwards=false
• 关键词: Control; Microstructure; Against; Strain; Localization

This research involves experimental investigations of strain localization on single - and poly-crystalline ductile-matrix material systems, analyses of mechanisms of micro-localization, e.g. shear banding, at intermediate and large plastic strains in these material systems, and the development of constitutive relations for the effective plastic response of ductile materials including the effects of complex multi-slip hardening, particles and pores, and microscopic shear localizations. The goal is to develop techniques to achieve optimal processing conditions so as to avoid undesirable flow localizations.

这项研究涉及应变的实验研究， 单晶和多晶延性基体上的局部化 材料系统，微观局部化机制的分析， 例如剪切带，在中等和大塑性应变下， 这些材料系统，和发展的构成 延性材料有效塑性响应关系式 包括复杂的多滑移硬化、颗粒 孔隙和微观剪切局部化。 目标是 开发技术以实现最佳加工条件， 以避免不希望的流动局部化。