U.S.-Czech Materials Research on Atomic Structure of Asymmetrical Grain Boundaries and Nucleation of Phase Transformation at Grain Boundaries

美捷材料不对称晶界原子结构及晶界相变成核研究

• 批准号: 9307418
• 负责人: Vaclav Vitek
• 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: 1993
• 资助国家: 美国
• 起止时间: 1993-09-15 至 1997-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9307418&HistoricalAwards=false
• 关键词: U.S.; Czech; Materials; Research; Atomic

9307418 Vitek This U.S.- Czech research project is between Dr. Vaclav Vitek of the University of Pennsylvania and Dr. Vaclav Paidar of the Czech Academy of Sciences' Institute of Physics. The researchers seek to establish a link between the structure and properties of more general, asymmetrical boundaries, and the relationships between structures of different boundaries. Establishing a link between the structure and properties of rather special, short period boundaries and boundaries of general nature is of principal importance for extension of the present atomistic studies of boundary properties. The researchers will also study the nucleation of new three-dimensional phases at grain boundaries and dynamic processes taking place at grain boundaries. In the process, they will assess the stability of the corresponding structures using the concept of atomic level elastic moduli, advanced earlier in Prof. Vitek's research supported by NSF. Results are expected to contribute to our knowledge of non-symmetric grain boundary structures, which can effect the structure and properties of metallic and ceramic materials. This project in materials research fulfills the program objective of advancing scientific knowledge by enabling leading experts in the United States and Eastern Europe to combine complementary talents and pool resources in areas of strong mutual interest and competence.

小行星9307418 这个美国-捷克的研究项目是瓦茨拉夫·维泰克博士和 宾夕法尼亚大学和捷克科学院物理研究所的Vaclav Paidar博士。 研究人员试图 在更一般的非对称边界的结构和属性之间建立联系，以及不同边界的结构之间的关系。 边界 在相当特殊的短周期边界和一般性质的边界的结构和性质之间建立联系， 主要的重要性，目前的原子研究的扩展， 边界性质 研究人员还将研究晶界处新三维相的成核和晶界处发生的动态过程。 在这个过程中，他们将使用原子水平弹性模量的概念来评估相应结构的稳定性，这是Vitek教授在NSF支持的研究中提出的。 研究结果将有助于我们了解非对称晶界结构，它可以影响金属和陶瓷材料的结构和性能。 该材料研究项目通过使美国和东欧的领先专家能够联合收割机互补人才并汇集，实现了推进科学知识的计划目标 在共同感兴趣和有能力的领域提供资源。