Faculty Awards for Women Scientists and Engineers

美国国家科学基金会女科学家和工程师教师奖认可获奖者在教学和奖学金方面的高质量记录，以及潜在的研究，学术职业和未来科学家和工程师的教育。该奖项将由Farkas博士承担的研究旨在了解有序金属间合金的力学行为。有序金属间合金为开发介于金属和陶瓷之间的材料提供了独特的机会。近年来的研究表明，微合金化可以控制这些合金的力学性能。微合金化通过改变结构和扩展晶体缺陷（即位错和晶界）的迁移率来控制这些材料的性能。今后5年的研究将集中于新型有序金属间合金扩展缺陷结构的理论研究，重点是力学行为的预测。所研究的合金将是立方和六边形的，包括但不限于Ni和Ti铝化物。利用各种计算机模拟技术，研究这些材料的晶界和位错核的原子结构以及位错与晶界的相互作用。目标是有助于理解这些合金在单晶和多晶形式下的力学行为，并能够提出提高其延展性的方法。在本研究的最后阶段，缺陷和缺陷相互作用模拟的结果将为这些金属间合金力学行为模型的发展和具有改进延展性的新型金属间化合物的设计奠定基础。

The NSF Faculty Awards for Women Scientists and Engineers recognizes the high quality of the awardee's record in teaching and scholarship, as well as potential research, the academic profession, and the education of future scientists and engineers. The research to be undertaken by Dr. Farkas with this award is aimed at understanding the mechanical behavior of ordered intermetallic alloys. Ordered intermetallic alloys offer a unique opportunity to develop materials with properties intermediate between metals and ceramics. In recent years it has been shown that the mechanical properties of these alloys can be controlled by microalloying. Microalloying controls the properties of these materials through modification of the structure and mobility of extended crystal defects, namely dislocations and grain boundaries. This research for the next five years will concentrate on theoretical studies of extended defect structure in novel ordered intermetallic alloys, with emphasis in predicting mechanical behavior. The alloys to be studied will be both cubic and hexagonal, including, but not limited to Ni and Ti Aluminides. Using various computer simulation techniques, the atomic structure of grain boundaries and dislocation cores in these materials and the interaction of dislocations and grain boundaries will be investigated. The goal is to contribute to the understanding of the mechanical behavior of these alloys in both single crystal and polycrystalline form and to be able to suggest ways to improve their ductility. In the last phase of this research, the results of the defect and defect interaction simulations will constitute the basis for the development of models for mechanical behavior of these intermetallic alloys and in the design of new intermetallics with improved ductility.