Wear of Nanostructured FeNiMnAl

纳米结构FeNiMnAl的磨损

• 批准号: 1063732
• 负责人: Ian Baker
• 金额: $ 33.5万
• 依托单位: Dartmouth College
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2011
• 资助国家: 美国
• 起止时间: 2011-09-01 至 2016-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1063732&HistoricalAwards=false
• 关键词: Wear; Nanostructured; FeNiMnAl

The research objective of this award is to determine how the dry sliding wear behavior and wear mechanisms of a range of recently-discovered, very high strength, nanostructured FeNiMnAl spinodal alloys vary with changes in microstructure such as phase size and composition. Testing will be performed at a range of speeds in air, argon and oxygen in order to understand the effects of local heating and of oxidation, including the role played by wear debris. The project will utilize a range of state-of-the-art techniques to characterize the pre- and post- wear specimens including transmission electron microscopy (TEM) coupled with X-ray spectroscopy; profilometry; X-ray diffraction; nanoindentation; cross-sectional scanning electron microscopy, and atom probe tomography (APT). The observed wear behavior will be modeled. The work will involve several collaborations: alloys will be drop cast at the Oak Ridge National Laboratory (ORNL) by Dr. Easo George; high temperature wear experiments will be carried out at the ORNL Tribology Research User Center in collaboration with Dr. Peter J. Blau; APT will be performed at ORNL with the aid of Dr. Mike K. Miller; and focused ion beam cross-sectioning/TEM will be performed with the aid of Professor Paul Munroe of the University of New South Wales, Australia.If successful, the project will not only provide an understanding of the relationship between the microstructure, deformation processes and the wear behavior of FeNiMnAl spinodal alloys, leading to their possible commercial utilization, but will contribute to understanding the wear behavior of spinodal alloys as a class of materials, which have been little studied. It will also lead to the development of cutting edge techniques to study wear. The project will train both a Ph.D. student and several undergraduates. The results will be published in refereed journals and presented at various conferences.

该奖项的研究目标是确定一系列最近发现，非常高的强度，纳米结构的Fenimnal Spinodal合金的干燥滑动磨损行为和磨损机制如何随相位大小和组成等微结构的变化而变化。测试将以空气，氩气和氧气的一系列速度进行，以了解局部加热和氧化的影响，包括磨损碎屑所起的作用。 该项目将利用一系列最先进的技术来表征磨损前和磨损后的样品，包括透射电子显微镜（TEM），并结合X射线光谱；细节仪； X射线衍射；纳米凹痕；横截面扫描电子显微镜和原子探针断层扫描（APT）。 观察到的磨损行为将进行建模。 这项工作将涉及几次合作：Also George博士将在Oak Ridge国家实验室（ORNL）上放置合金；高温磨损实验将与Peter J. Blau博士合作在ORNL Tribology研究用户中心进行。 APT将在Mike K. Miller博士的帮助下在ORNL进行；并将在澳大利亚新南威尔士大学的保罗·蒙罗（Paul Munroe）教授的帮助下进行重点的离子光束横截面/TEM。 Fenimnal Spinodal合金的磨损行为，导致其可能的商业利用，但将有助于理解Spinodal合金作为一类材料的磨损行为，这些材料很少被研究。 这还将导致尖端技术的发展磨损。 该项目将培训两个博士学位。学生和几个本科生。结果将在卷轴期刊上发表，并在各种会议上介绍。