Faculty Awards for Women Scientists and Engineers

美国国家科学基金会女科学家和工程师奖 承认获奖者在教学方面的高质量记录， 奖学金，以及潜在的研究，学术 专业，以及未来科学家和工程师的教育。 Farkas博士获得该奖项的研究是 旨在了解有序的机械行为， 金属间合金 有序金属间合金提供了一个独特的机会， 开发性能介于金属之间的材料， 陶瓷.近年来，研究表明， 这些合金的性能可以通过微合金化来控制。 微合金化通过以下方式控制这些材料的性能： 扩展晶体的结构和迁移率的改进 缺陷，即位错和晶界。本研究 今后五年将集中精力进行理论研究， 新型有序金属间合金中的扩展缺陷结构， 重点在于预测机械性能。合金要 研究将是立方体和六边形，包括，但不是 仅限于Ni和Ti铝化物。利用各种计算机模拟 技术，晶界的原子结构和 这些材料中的位错核心以及 将研究位错和晶界。目标是 有助于理解 这些合金以单晶和多晶形式存在， 能够提出改善其延展性的方法。 在本研究的最后阶段，缺陷的结果 和缺陷相互作用模拟将构成基础， 这些机械行为模型的发展 金属间化合物合金和新的金属间化合物的设计， 改善延展性。

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.