U.S.-Korea Cooperative Research: Synthesis and Properties of Light Weight Alumina Particle Reinforced Ductile Iron Castings

美韩合作研究：轻质氧化铝颗粒增强球墨铸铁件的合成与性能

• 批准号: 0352314
• 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: 2004
• 资助国家: 美国
• 起止时间: 2004-09-01 至 2008-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0352314&HistoricalAwards=false
• 关键词: U.S.; Korea; Cooperative; Research; Synthesis

0352314RohatgiThis award enables Dr. Rohatgi and junior members of his research group from the Center for Composites at the University of Wisconsin-Milwaukee (UWM) to collaborate in research on metal-matrix composites with Dr. Chang Ok Choi and others of the Metallurgical Engineering Department of Dong-A University in Pusan, South Korea. They plan to develop optimum processing conditions for synthesizing low-cost lightweight ductile iron composites reinforced with alumina The collaborative research plan joins the complementary expertise of Dr. Rohatgi in developing various nonferrous metal-matrix composites and that of the Korean research group in the area of ductile iron castings.Dispersal of alumina particles in ductile iron castings is expected to improve the stiffness and hardness, reduce the weight and increase the wear resistance of ductile iron components in a variety of mechanical systems. The challenges in this project are to develop new metallurgical techniques to incorporate alumina particles in ductile iron melts, to prepare very fine graphite nodules with improved spheroid shape and to inoculate them into in composite melts. Once this has been achieved, the investigators plan to cast a selected prototype component using the process developed to demonstrate improved performance in a component at Dong-A University. The project work will lead to an increased understanding of the incorporation of alumina particles in molten ductile iron and their interaction with transitional phases formed during solidification. Broader significance: The development of metal matrix composites has been one of the major innovations in materials in the past 25 years. However the use of cast composites has been limited because techniques did not exist to blend the components well enough to achieve improved materials behavior. The alumina-reinforced cast ductile iron to be developed with new techniques in this project will be lighter and stronger than widely used ferrous materials in cars, trucks, mining equipment and small engines. Adoption in the automobile industry could contribute to energy conservation. The improved characteristics of this composite material can also make it useful in other manufacturing industries. The collaborative arrangement also will benefit students and postdoctoral fellows of the U.S. and Korea. The U.S. team includes undergraduate and graduate students and a postdoctoral fellow; several of them will travel to Korea for research experience. The Korean team also has several students. The students will benefit from their interaction and also from being exposed to state-of-the-art research and the metal castings industries of both countries.

0352314Rohatgi 该奖项使威斯康星大学密尔沃基分校 (UWM) 复合材料中心的 Rohatgi 博士及其研究小组的初级成员能够与韩国釜山东亚大学冶金工程系的 Chang Ok Choi 博士和其他人合作研究金属基复合材料。他们计划开发合成低成本轻质氧化铝增强球墨铸铁复合材料的最佳加工条件。该合作研究计划结合了 Rohatgi 博士在开发各种有色金属基复合材料方面的互补专业知识以及韩国研究小组在球墨铸铁铸件领域的专业知识。球墨铸铁铸件中氧化铝颗粒的分散有望提高刚度和硬度，降低 减轻各种机械系统中球墨铸铁部件的重量并提高其耐磨性。该项目面临的挑战是开发新的冶金技术，将氧化铝颗粒掺入球墨铸铁熔体中，制备具有改进球体形状的非常细的石墨球，并将它们孕育到复合材料熔体中。 一旦实现这一目标，研究人员计划使用东亚大学开发的工艺铸造选定的原型部件，以证明部件性能的提高。该项目工作将加深对氧化铝颗粒在熔融球墨铸铁中的掺入及其与凝固过程中形成的过渡相的相互作用的了解。更广泛的意义：金属基复合材料的发展是过去25年来材料领域的重大创新之一。然而，铸造复合材料的使用受到限制，因为不存在将组分充分混合以实现材料性能改进的技术。该项目采用新技术开发的氧化铝强化铸铁球墨铸铁将比汽车、卡车、采矿设备和小型发动机中广泛使用的黑色金属材料更轻、更强。 汽车行业的采用可能有助于节能。这种复合材料的改进特性也使其可用于其他制造行业。这项合作安排也将使美国和韩国的学生和博士后受益。美国团队包括本科生、研究生以及一名博士后；其中一些人将前往韩国进行研究。韩国队也有几名学生。学生们将从他们的互动中受益，并接触两国最先进的研究和金属铸造行业。