Fundamental Studies of Localized Plastic Deformation

局部塑性变形的基础研究

• 批准号: 9110930
• 负责人: Robert Asaro
• 金额: $ 42.26万
• 依托单位: University of California-San Diego
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1992
• 资助国家: 美国
• 起止时间: 1992-02-01 至 1995-04-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9110930&HistoricalAwards=false
• 关键词: Fundamental; Studies; Localized; Plastic; Deformation

This research is aimed at a precise understanding of the micro- and macromechanical descriptions of large strain deformation and failure of ductile heterophase microstructures. Emphasis is on deformation processes at, or near, interfaces and on the failure of interfaces in composite materials. Specific objectives include (1) development of large strain, strain-rate dependent theory and predictive models for composite structures; (2) application of the models to the deformation and failure of the microstructures; (3) experimental studies of deformation and failure in metal-matrix composite materials; (4) experimental studies of deformation at bi- material interfaces and analysis of their fracture resistance; (5) related effects of residual stresses developed during the processing on deformation and failure mechanisms. %%% This research relates to structural metal alloys and composites that employ interfaces to control mechanical behavior and/or surface coatings to create improved properties.

这项研究旨在准确理解微观和 大应变变形的宏观力学描述， 韧性异相微结构的失效。 重点是 变形过程中，或附近，接口和故障 复合材料中的界面 具体目标包括（1） 大应变、应变率相关理论的发展， 复合材料结构的预测模型;（2） 微观组织的变形和破坏模型;（3） 金属基体变形与破坏的实验研究 复合材料的变形实验研究; 材料界面及其断裂抗力分析;（5） 残余应力的相关影响， 变形破坏机制的研究。 %%% 本研究涉及结构金属合金和复合材料 其采用界面来控制机械行为和/或 表面涂层，以创造更好的性能。