US-Egypt Cooperative Research: Manufacture of Aluminum and Magnesium Matrix Composites under Industrial Conditions

美埃合作研究：工业条件下制造铝镁基复合材料

• 批准号: 0222603
• 负责人: Pradeep Rohatgi
• 金额: --
• 依托单位: University of Wisconsin-Milwaukee
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2002
• 资助国家: 美国
• 起止时间: 2002-09-01 至 2009-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0222603&HistoricalAwards=false
• 关键词: US; Egypt; Cooperative; Research; Manufacture

0222603RohatgiDescription: This award is to support a collaborative project between Dr. Pradeep Rohatgi, Professor in the Department of Materials at the University of Wisconsin- Milwaukee (UWM), Milwaukee, Wisconsin and Dr. Atef Daoud, Central Metallurgical Research and Development Institute, Helwan, Cairo, Egypt. The two scientists plan to conduct research aimed at increased understanding of fundamental phenomena of particle clustering, settling, nucleation and particle pushing, which control the distribution of particles and influence the properties in cast metal matrix composites (MMC). The work should result in a decrease in cost and improvement in properties of cast metal matrix composites. MMC consist of a metallic matrix and a reinforcing phase such as fibers and particles. The main function of the matrix is to transfer and distribute the load to the reinforcement. The reinforcements impart strength, stiffness and other desirable properties like wear resistance and a low coefficient of friction to the composites.Reinforcements are generally ceramics, including oxides, carbides and nitrides. These materials are used because of their combination of high strength and stiffness at room and elevated temperatures. Particles are the cheapest form of reinforcement materials and they impart isotropic properties to composites. Among the reinforcements in aluminum SiC, aluminum oxide and fly ash are attractive materials because of their relatively low costs and interesting physical and mechanical properties. Scope: Although the U.S. automotive industry currently manufactures a limited number of components from cast composites, certain problems, such as high cost, low ductility and fracture toughness, a scatter in properties and casting defects, prevent the widespread use of cast MMC. This research will help overcome these issues. The U.S. PI has experience and a strong background in the solidification processing of alloys and MMC. He and the Egyptian scientist have established collaboration in previous joint research activities. In this project, Dr. Daoud's experience in laboratory-scale manufacturing of MMC components will complement the fundamental research experience of Dr. Rohatgi. The project is likely to benefit the U.S. as well as Egypt in promoting the use of cast metal matrix composites to conserve energy and the environment. The research is expected to involve a U.S. postdoctorate and a number of U.S. undergraduate students at UWM. This project is being supported under the US-Egypt Joint Fund Program, which provides grants to scientists and engineers in both countries to carry out these cooperative activities.

0222603Rohatgi 描述：该奖项旨在支持威斯康星大学密尔沃基分校 (UWM) 材料系教授 Pradeep Rohatgi 博士和赫勒万中央冶金研究与发展研究所 Atef Daoud 博士之间的合作项目，埃及开罗。 两位科学家计划开展研究，旨在加深对颗粒聚集、沉降、成核和颗粒推动等基本现象的了解，这些现象控制颗粒的分布并影响铸造金属基复合材料 (MMC) 的性能。这项工作应该会降低铸造金属基复合材料的成本并提高其性能。 MMC 由金属基体和增强相（如纤维和颗粒）组成。 基体的主要功能是将载荷传递和分配到钢筋上。 增强材料赋予复合材料强度、刚度和其他所需性能，例如耐磨性和低摩擦系数。增强材料通常是陶瓷，包括氧化物、碳化物和氮化物。 使用这些材料是因为它们在室温和高温下具有高强度和刚度。 颗粒是最便宜的增强材料形式，它们赋予复合材料各向同性的特性。 在铝碳化硅增强材料中，氧化铝和粉煤灰是颇具吸引力的材料，因为它们的成本相对较低，并且具有令人感兴趣的物理和机械性能。 范围：虽然美国汽车工业目前用铸造复合材料制造的部件数量有限，但某些问题，例如成本高、延展性和断裂韧性低、性能分散和铸造缺陷，阻碍了铸造MMC的广泛使用。 这项研究将有助于克服这些问题。 美国PI在合金和MMC凝固加工方面拥有丰富的经验和强大的背景。 他和埃及科学家在之前的联合研究活动中建立了合作。 在该项目中，Daoud 博士在 MMC 元件实验室规模制造方面的经验将补充 Rohatgi 博士的基础研究经验。 该项目可能有利于美国和埃及推广铸造金属基复合材料的使用，以节约能源和环境。 这项研究预计将涉及 UWM 的一名美国博士后和一些美国本科生。该项目得到了美国-埃及联合基金计划的支持，该计划向两国的科学家和工程师提供赠款以开展这些合作活动。