Presidential Young Investigators Award: New Solidification Techniques in Manufacturing of Materials

总统青年研究员奖：材料制造中的新型凝固技术

• 批准号: 8957149
• 负责人: Christoph Beckermann
• 金额: $ 31.2万
• 依托单位: University of Iowa
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1989
• 资助国家: 美国
• 起止时间: 1989-07-01 至 1994-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8957149&HistoricalAwards=false
• 关键词: Presidential; Young; Investigators; Award; New

The primary objective of this PYI grant is to create new solidification techniques to manufacture materials with improved properties. This is to be accomplished through a fundamental study of the large variety of transport phenomena present in solidification processes. Specifically, research will proceed through a thorough investigation of the heat and species transport by convection and diffusion in both the solid and liquid phases, at the micro and macro scales, together with consideration of nucleation, phase-change kinetics, and solid mechanics. Because of their technological importance, the research will concentrate on solidification of metallic alloys and metal composites. The numerical modelling effort will be supported by an experimental program involving novel diagnostic techniques for measuring temperature and species concentration. Solidification processes are integral to the manufacture of virtually all man-made materials, including metals, polymers, ceramics, composites, as well as new electronics, optical, and magnetic materials. Consequently, considerable research effort needs to be directed toward the development of sophisticated solidification techniques to produce materials with precisely controlled shapes, chemistry, and physical properties. Through close collaboration with researchers in industry, this PYI award can have a strong impact on present manufacturing technologies.

保华是次拨款的主要目的，是 固化技术来制造材料， 改进的性能。 这将通过一个 对各种各样的输运现象的基础研究 存在于固化过程中。 具体来说，研究 将对热量进行彻底调查， 物质通过对流和扩散进行迁移， 固相和液相，在微观和宏观尺度上， 同时考虑成核、相变 动力学和固体力学。 因为他们的技术 重要的是，研究将集中在固化 金属合金和金属复合材料。 数值模拟 这一努力将得到一个实验项目的支持， 用于测量温度的新型诊断技术， 物种浓度 固化过程是制造 几乎所有的人造材料，包括金属，聚合物， 陶瓷，复合材料，以及新的电子，光学， 磁性材料. 因此，大量的研究 需要努力发展 先进的固化技术， 具有精确控制的形状，化学和物理 特性. 通过与研究人员的密切合作， 保华这个奖项对业界有很大影响， 制造技术。