GOALI: Modeling Solute Effects in Magnesium Alloys: First-principles to Predictive Finite-Element

目标：模拟镁合金中的溶质效应：预测有限元的第一原理

• 批准号: 0825961
• 负责人: Dallas Trinkle
• 金额: $ 28.13万
• 依托单位: University of Illinois at Urbana-Champaign
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2008
• 资助国家: 美国
• 起止时间: 2008-08-01 至 2012-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0825961&HistoricalAwards=false
• 关键词: GOALI; Modeling; Solute; Effects; Magnesium

GOALI: Modeling Solute Effects in Magnesium Alloys: First-principles to Predictive Finite-ElementDallas R. Trinkle; Materials Science and Engineering; University of Illinois, Urbana-Champaign Louis G. Hector, Jr.; General Motors Technical Center; Warren, Michigan The University of Illinois and General Motors will collaborate on a computer modeling study of how different chemical additions?like aluminum and zinc as well as more exotic elements?change the strength of the metal magnesium to design new magnesium alloys for widespread use. The computer model starts with an understanding of how atoms bind to each other to model changes in chemical bonds as the metal is bent and shaped. Different chemical additions further change the bonding, which makes the alloy stronger/weaker, or ductile/brittle. Modeling changes in strength and ductility allows researchers to design and optimize new magnesium alloys in a computer, rather than through expensive trial-and-error approaches. In addition, the quantitative understanding of chemical bonding from atoms is built into computer models for the shaping and behavior of real automobile parts.Magnesium alloys have two-thirds the density of aluminum; replacing many of the steel and aluminum body pieces in an automobile with magnesium can significantly reduce the weight of a vehicle, which reduces fuel consumption by nearly 30% and a substantial reduction in emissions of greenhouse gases. The computer modeling will allow the design of new alloys much more rapidly, and allow magnesium alloys to enter widespread use for transportation. Students at Illinois will learn first-hand the connection of academic research to industrial development, and materials science that benefits society. Moreover, Prof. Trinkle and Dr. Hector will work with high school science teachers in Illinois and Detroit doing in-class presentations and demonstrations about the use of materials science to combat global warming.

目标：镁合金中的溶质效应建模：预测有限元的第一原理Dallas R. Trinkle；材料科学与工程；伊利诺伊大学厄巴纳-香槟分校 Louis G. Hector, Jr.；通用汽车技术中心；密歇根州沃伦伊利诺伊大学和通用汽车公司将合作进行一项计算机建模研究，研究不同的化学添加物（如铝和锌以及更奇特的元素）如何改变金属镁的强度，以设计广泛使用的新型镁合金。 计算机模型首先了解原子如何相互结合，以模拟金属弯曲和成形时化学键的变化。 不同的化学添加进一步改变了键合，从而使合金更强/更弱，或延展/脆化。 通过对强度和延展性变化进行建模，研究人员可以在计算机中设计和优化新的镁合金，而不是通过昂贵的试错方法。 此外，对原子化学键的定量理解被构建到计算机模型中，用于真实汽车零件的成型和行为。镁合金的密度是铝的三分之二；镁合金的密度是铝的三分之二；镁合金的密度是铝的三分之二。用镁替代汽车中的许多钢和铝车身部件可以显着减轻车辆的重量，从而减少近30%的燃料消耗，并大幅减少温室气体的排放。 计算机建模将使新合金的设计更加迅速，并使镁合金在运输领域得到广泛应用。 伊利诺伊州的学生将直接了解学术研究与工业发展以及造福社会的材料科学的联系。 此外，特林克教授和赫克托博士将与伊利诺伊州和底特律的高中科学教师合作，在课堂上进行有关利用材料科学应对全球变暖的演讲和演示。