U.S.-Mexico Cooperative Research on (1) Nanocrystalline Metals and (2) Particle Coarsening Kinetics

9507577 Weertman美国-墨西哥奖将支持美国西北大学的Julia Weertman教授与美国西北大学教授的一项研究合作。墨西哥国立理工学院（IPN）的Jorge Cabanas Moreno和Hector Calderon Benavides，对纳米晶金属的力学行为和表征，以及镍基和铁基合金中共格颗粒的粗化动力学进行了研究。为了研究纳米晶金属的力学性能和内部结构，将采用机械合金化/机械铣削等两种合成方法制备样品。从而考察了制备方法对材料性能和晶界行为的影响。在含有双峰粒子分布的样品中，将研究金属合金中相干粒子的粗化行为作为晶格失配的函数。拟议的研究合作将受益于西北大学在纳米晶体材料的机械性能和内部结构以及墨西哥方面所遵循的合成和加工路线方面的丰富经验。该奖项还将促进学生的旅行，从而为他们在职业生涯的早期提供国际研究经验。* * *

9507577 Weertman This U.S.-Mexico award will support Prof. Julia Weertman of Lorthwestern University in a research collaboration with Profs. Jorge Cabanas Moreno and Hector Calderon Benavides of the Instituto Politecnico Nacional (IPN) in Mexico City, for research on the mechanical behavior and characterization of nanocrystalline metals, and the kinetics of coarsening of coherent particles in nickel and iron-based alloys. In studying the mechanical properties and internal structure of nanocrystalline metals, samples will be prepared by mechanical alloying/mechanical milling and two other synthesis routes. Thus the influence of preparation method on properties and grain boundary behavior will be examined. The coarsening behavior of coherent particles in metal alloys will be studied as a function of lattice mismatch in samples containing bimodal particle distributions. The proposed research collaboration will benefit from the extensive experience at Northwestern University on the mechanical properties and internal structure of nanocrystalline materials and the synthesis and processing routes followed by the Mexican side. This award will also facilitate the travel of students, thus providing them with an international research experience early in their careers. ***