Mechanics of Nanocrystalline Materials

纳米晶材料力学

• 批准号: 0510409
• 负责人: George Weng
• 金额: --
• 依托单位: Rutgers University New Brunswick
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2005
• 资助国家: 美国
• 起止时间: 2005-09-15 至 2009-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0510409&HistoricalAwards=false
• 关键词: Mechanics; Nanocrystalline; Materials

CMS-0510409, Mechanics of Nanocrystalline Materials, by George J. WengAbstract Preliminary experiments on certain nanocrystalline metals have indicated that, at room temperature, their strength could increase by 4-5 times as compared to the coarse-grained materials that we are using in our industry. But the precise amount of increase for each material and the exact grain size at which such optimal strength could occur, are not known, and there are other factors that could affect the attainment of the optimal strength. In this project we will develop micromechanics-based models to search for such optimal conditions that lead to the highest possible strength and ductility at both room and high temperature, for both metals and ceramics. The outcome of this research will have significant impact to our industry in the production of super strong, high-temperature resistant, and high ductility materials. We also plan to introduce the subject of nano-mechanics to our undergraduate and graduate students, to prepare them for the next generation of nanotechnology.

CMS-0510409，纳米晶体材料力学，乔治J.翁摘要 对某些纳米晶体金属的初步实验表明，在室温下，它们的强度可以比我们工业中使用的粗晶粒材料增加4-5倍。但是，每种材料的精确增加量以及可能出现这种最佳强度的精确晶粒尺寸尚不清楚，并且还有其他因素可能影响达到最佳强度。在这个项目中，我们将开发基于微观力学的模型，以寻找这种最佳条件，导致在室温和高温下金属和陶瓷的最高强度和延展性。该研究成果将对我国高强、耐高温、高韧性材料的生产产生重大影响。 我们还计划向本科生和研究生介绍纳米力学，为下一代纳米技术做好准备。