MRSEC: Carnegie Mellon University Materials Research Science and Engineering Center

MRSEC：卡内基梅隆大学材料研究科学与工程中心

• 批准号: 0520425
• 负责人: Gregory Rohrer
• 金额: $ 500万
• 依托单位: Carnegie-Mellon University
• 依托单位国家: 美国
• 项目类别: Cooperative Agreement
• 财政年份: 2005
• 资助国家: 美国
• 起止时间: 2005-10-01 至 2013-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0520425&HistoricalAwards=false
• 关键词: MRSEC; Carnegie; Mellon; University; Materials

Most metallic and ceramic materials used in aircraft, automobiles, and devices such as computers are polycrystalline. In other words, they are made up of many microscopic crystals held together by grain boundaries. It is widely recognized that the types of grain boundaries in a material and the manner in which they are connected affect a wide range of properties and, ultimately, a material's performance and lifetime. In most cases, however, our ability to predict and control the materials properties that are governed by the grain boundaries is severely limited by our incomplete knowledge of the network structure and the behavior of individual interfaces. The CMU MRSEC's goals are to understand the origins of the quantifiable characteristics of polycrystals that arise during processing, to develop strategies for influencing these characteristics in predictable ways, and to define microstructural metrics that can be directly related to macroscopic properties and performance. The Center's tools and findings will have applications in a range of practical materials processing applications and, to insure rapid implementation, we work collaboratively with government, industry, and international laboratories. The Center's major educational goals are to increase the participation of underrepresented minorities in materials research, raise awareness of materials science and engineering among high school students through the curricula used in chemistry, physics, and earth science classes, provide meaningful research experiences for undergraduates, and support interdisciplinary graduate education.

飞机，汽车和计算机等设备中使用的大多数金属和陶瓷材料都是多晶。 换句话说，它们由许多微观晶体组成，由晶界固定在一起。 广泛认识到的是，材料中的晶界类型以及它们连接的方式会影响广泛的特性，并最终会影响材料的性能和寿命。 但是，在大多数情况下，我们预测和控制受晶界控制的材料特性的能力受到我们对网络结构的不完整知识和单个接口行为的严重限制。 CMU MRSEC的目标是了解在处理过程中出现的多晶特征的起源，以制定以可预测的方式影响这些特征的策略，并定义可能与宏观镜面和性能直接相关的微观结构指标。该中心的工具和发现将在一系列实用的材料处理应用中提供应用程序，并确保快速实施，我们与政府，行业和国际实验室合作。该中心的主要教育目标是通过化学，物理学和地球科学班级使用的课程提高代表性不足的少数群体参与材料研究，提高高中生对材料科学和工程的认识，为本科生提供有意义的研究经验，并为本科生提供有意义的研究经验。支持跨学科研究生教育。