Mechanical Properties of Laminated Copper-Based Composites Produced by Electrodeposition Techniques

电镀技术生产的层压铜基复合材料的机械性能

• 批准号: 9527624
• 负责人: Fereshteh Ebrahimi
• 金额: --
• 依托单位: University of Florida
• 依托单位国家: 美国
• 项目类别: Continuing grant
• 财政年份: 1996
• 资助国家: 美国
• 起止时间: 1996-01-15 至 1999-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9527624&HistoricalAwards=false
• 关键词: Mechanical; Properties; Laminated; Copper; Based

9527624 Ebrahimi This project addresses two emerging scientific interests: the extraordinary strength of composites with interphase spacing in the submicron to nanoscale range and near-net- shape manufacturing of metal composites by electroforming. The objective is to utilize electrodeposition as a technique to produce ultra-fine laminated composites of copper-nickel and copper-silver, and to develop a mechanistic understanding of microstructure and mechanical property relationships in these materials. The study aims at understanding the effects of fineness of microstructure measured by laminate spacing OsO to grain size OdO, texture, and interfacial structure on yielding, strain hardening, and fracture behavior. The choice of the Cu-Ni and Cu-Ag systems allows investigation of the effects of lattice mismatch and stacking fault energy on the interfacial structure and mechanical properties of nanostructured multilayers. Results of extensive microstructural and mechanical characterization will be analyzed and used to develop mechanistic models for deformation and fracture of ultra-fine multilayered composites. %%% This study extends understanding of deformation and fracture mechanisms in ultra-fine, laminated composites. ***

9527624易卜拉欣这个项目涉及两个新兴的科学兴趣：具有亚微米到纳米范围内相间间距的复合材料的非凡强度，以及通过电铸制造近乎净形状的金属复合材料。其目的是利用电沉积作为一种技术来制备铜-镍和铜-银的超细层状复合材料，并从机理上了解这些材料的微观结构和力学性能关系。本研究旨在了解层间距Oso测量的微观组织细度对晶粒度ODO、织构和界面结构对屈服、应变硬化和断裂行为的影响。研究了晶格失配和层错能对纳米多层膜界面结构和力学性能的影响。广泛的微观结构和力学表征的结果将被分析并用于建立超细多层复合材料的变形和断裂的力学模型。%这项研究扩大了对超细层压复合材料的变形和断裂机制的理解。***