Materials World Network: High Temperature Mechanical Behavior of Metal/Ceramic Nanolaminate Composites

材料世界网：金属/陶瓷纳米层压复合材料的高温机械行为

• 批准号: 1209928
• 负责人: Nikhilesh Chawla
• 金额: $ 34.57万
• 依托单位: Arizona State University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2012
• 资助国家: 美国
• 起止时间: 2012-07-01 至 2015-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1209928&HistoricalAwards=false
• 关键词: Materials; World; Network; Temperature; Mechanical

NON-TECHNICAL DESCRIPTION: Natural and man-made layered structures exhibit extremely high strength, toughness, thermal resistance, and biocompatibility characteristics. On the microscopic scale, lamellar layered structures are the basic foundation for the high strength and toughness of steel as a structural material. Structures in nature, such as mollusk shells, derive their high strength and toughness from a layered ceramic structure bonded together by an organic glue. Indeed, the structure of engineering materials often mimics the structures in nature. Multilayered materials at the nanoscale exhibit exciting possibilities for extremely high strength, fatigue resistance, thermal resistance, wear resistance, and biocompatibility. Thus, designing layered structures at the nanoscale is a particularly attractive strategy for developing a new generation of multifunctional materials with tremendous possibilities. Nanolaminate materials have very different properties from traditional bulk composites, due to their much higher interfacial area and dramatically smaller length scale. These changes can lead to new types of deformation mechanisms, which are very different from those observed in bulk systems. Fundamental research on the mechanical behavior of metal/ceramic multilayers at the nanoscale is necessary for successful implementation of these materials in engineering applications.TECHNICAL DETAILS: This international project focuses on the high temperature behavior of multilayered metal/ceramic materials. The collaborative project focuses on studying the fundamental science related to high temperature behavior and plasticity at small length scale, particularly under large constraint, load transfer to high stiffness ceramic layers, and a basic understanding of how nanostructure influences high temperature deformation. This project involves Prof. Nik Chawla and his research team at Arizona State University and Dr. Jon Molina-Aldareguia and his research group at the Madrid Institute for Advanced Studies of Materials (IMDEA) in the Polytechnic University of Madrid, Spain (where the Spanish effort is funded by the Spanish National Science Foundation). As well there are strong linkages to researchers at Los Alamos National Laboratory. Cutting-edge techniques, such as high temperature nanoindentation, and in situ indentation in a scanning electron microscope (SEM) will be used. A new generation of graduate students are being trained through international experiences, and the development of course material is being shared in Spanish to attract students underrepresented in science and engineering.

非技术描述：天然和人造层状结构具有极高的强度、韧性、耐热性和生物相容性。在微观尺度上，层状层状结构是钢作为结构材料的高强度和高韧性的基本基础。自然界中的结构，如软体动物的外壳，其高强度和韧性来自通过有机胶粘合在一起的层状陶瓷结构。事实上，工程材料的结构经常模仿自然界中的结构。纳米级的多层材料具有极高的强度、抗疲劳性、耐热性、耐磨性和生物相容性。因此，在纳米尺度上设计层状结构是开发具有巨大可能性的新一代多功能材料的特别有吸引力的策略。纳米层压材料具有与传统块体复合材料非常不同的性能，这是由于其高得多的界面面积和显着更小的长度尺度。这些变化可能导致新类型的变形机制，这是非常不同的观察到的散装系统。在纳米尺度下对金属/陶瓷多层膜的力学行为进行基础研究，对于这些材料在工程应用中的成功实施是必要的。技术支持：本国际项目主要关注多层金属/陶瓷材料的高温行为。该合作项目的重点是研究与小长度尺度下的高温行为和塑性相关的基础科学，特别是在大约束条件下，负载转移到高刚度陶瓷层，以及对纳米结构如何影响高温变形的基本理解。该项目涉及亚利桑那州立大学的Nik Chawla教授和他的研究小组以及西班牙马德里理工大学马德里材料高级研究所（IMDEA）的Jon Molina-Aldareguia博士和他的研究小组（西班牙的努力由西班牙国家科学基金会资助）。此外，与洛斯阿拉莫斯国家实验室的研究人员也有密切的联系。将使用尖端技术，例如高温纳米压痕和扫描电子显微镜（SEM）中的原位压痕。正在通过国际经验培训新一代的研究生，并以西班牙文分享课程材料的编写情况，以吸引理工科人数不足的学生。