EAGER: Engineering Metal-MAX Multilayered Nanocomposites: Hierarchical Microstructures for Tunable Strength and Toughness

EAGER：工程 Metal-MAX 多层纳米复合材料：可调节强度和韧性的分层微观结构

• 批准号: 1841331
• 负责人: Siddhartha Pathak
• 金额: $ 22.34万
• 依托单位: Board of Regents, NSHE, obo University of Nevada, Reno
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2018
• 资助国家: 美国
• 起止时间: 2018-09-01 至 2020-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1841331&HistoricalAwards=false
• 关键词: EAGER; Engineering; Metal; MAX; Multilayered

For a number of applications in manufacturing, energy and infrastructure, materials with high strength and high ductility are needed. Finding both of these properties in the same material, however, is extremely rare. A number of materials engineering approaches seek to create high strength, high ductility materials, including fabricating nanostructured layered structures with alternating materials. This EArly-concept Grants for Exploratory Research (EAGER) award supports an exploratory experimental and computational effort to engineer multi-layered metal-ceramic nanocomposite materials that exhibit tunable strength and toughness. The nanocomposite will be composed of alternating nanoscale metallic and ceramic layers. The ceramic layers are part of the family of ceramic materials known as MAX phase, which themselves are layered carbide or nitride materials. Combining metal layers with MAX layers results in a unique structure with as a complex network of interfaces which will eventually control the behavior of the material. These materials have applications in multiple technological fields, including high temperature structural applications, protective coatings, sensors, tunable damping films for microelectromechanical systems (MEMS), and potential applications in cladding materials for nuclear use. The ability to have a strong yet ductile metal-MAX composite with improved mechanical behavior to satisfy the demands of such applications will provide considerable technological and economic benefits. The research will provide graduate training for a PhD student who will also benefit from the collaboration with Los Alamos National Laboratory.The objectives of this combined modeling and experimental EAGER research are to: a) design and synthesize multi-layered nanocomposites composed of alternating metallic and MAX phase layers with a lamellar thickness reduced to the nanoscale, b) establish a fundamental understanding of the hierarchical interface driven microstructure and microstructure-property relationships using nano-mechanical testing tools (nanoindentation, micro-compression), and c) formulate and validate atomistic models that outline the premise for controlling the activation of specific deformation mode(s) through hierarchical design of metal-MAX nanolaminates, thus tuning their mechanical properties to achieve greater strength and toughness. Upon successful completion of this research, tunable properties will be realized through guided variations in processing parameters from computation, as our nanoscale modeling will unravel the role of interfaces and the hierarchical microstructure of the metal-MAX system.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

对于制造，能源和基础设施中的许多应用，需要具有高强度和高延展性的材料。但是，在同一材料中找到这两种特性非常罕见。许多材料工程方法旨在创造高强度，高延展性材料，包括用交替材料制造纳米结构分层结构。这项探索性研究的早期概念授予（急切）奖支持探索性实验和计算工作，以设计具有可调强度和韧性的多层金属陶瓷纳米复合材料。纳米复合材料将由交替的纳米级金属和陶瓷层组成。陶瓷层是称为Max阶段的陶瓷材料家族的一部分，其本身是碳化物或氮化物材料的一部分。将金属层与最大层结合起来会导致独特的结构，并作为一个复杂的接口网络，最终将控制材料的行为。这些材料在多个技术领域都有应用，包括高温结构应用，保护性涂料，传感器，可调式阻尼膜用于微机械系统（MEMS），以及用于核电使用的覆层材料中的潜在应用。具有强大而延性的金属 - 最大综合材料具有改进的机械行为以满足此类应用的需求的能力将提供相当大的技术和经济利益。 The research will provide graduate training for a PhD student who will also benefit from the collaboration with Los Alamos National Laboratory.The objectives of this combined modeling and experimental EAGER research are to: a) design and synthesize multi-layered nanocomposites composed of alternating metallic and MAX phase layers with a lamellar thickness reduced to the nanoscale, b) establish a fundamental understanding of the hierarchical interface driven使用纳米机械测试工具（纳米压力，微型压缩）和c）制定和验证原子模型，这些模型概述了控制特定变形模式的激活（S），通过金属含量纳米酰胺的高级设计，使用特定的变形模式的激活来概述了原子模式，从而使其具有更大的特性，从而概述了控制特定变形模式的激活，从而概述了控制特定的变形模式的前提，从而使其更大的特性和强度实现了强度，从而概述了控制特定变形模式的前提，从而概述了控制特定变形模式的前提，从而使其更大的特性概述了，从而使其具有更大的特性，从而使其具有更大的强度和强度。成功完成这项研究后，将通过计算处理参数的指导性变化来实现可调节属性，因为我们的纳米级建模将揭开界面的作用和金属 - 最大系统的层次微观结构。该奖项反映了NSF的法定任务，并通过评估基金会的智力效果，并通过评估了基金会的范围。

项目成果

Nanoindentation deformation and cracking in sapphire

• DOI: 10.1016/j.ceramint.2019.02.022
• 发表时间: 2019-06
• 期刊: Ceramics International
• 影响因子: 5.2
• 作者: V. Trabadelo;Siddhartha Pathak;F. Saeidi;M. Parlińska-Wojtan;K. Wasmer

Elevated and cryogenic temperature micropillar compression of magnesium–niobium multilayer films

镁铌多层薄膜的高温和低温微柱压缩

• DOI: 10.1007/s10853-019-03422-x
• 发表时间: 2019
• 期刊: Journal of materials science
• 影响因子: 4.5
• 作者: Thomas, K;Mohanty, G;Wehrs, J;Taylor, AA;Pathak, S;Casari, D;Schwiedrzik, J;Mara, N;Spolenak, R;Michler, J
• 通讯作者: Michler, J

High temperature nanoindentation of Cu–TiN nanolaminates

Cu−TiN 纳米层压材料的高温纳米压痕

• DOI: 10.1016/j.msea.2020.140522
• 发表时间: 2020
• 期刊: Materials Science and Engineering: A
• 作者: Wheeler, Jeffrey M.;Harvey, Cayla;Li, Nan;Misra, Amit;Mara, Nathan A.;Maeder, Xavier;Michler, Johann;Pathak, Siddhartha
• 通讯作者: Pathak, Siddhartha