CAREER: Enhanced Ductility Aluminum Alloys: An Economical Alternative for Superplastic Forming

小行星9702156 经济的，增强延展性的铝合金工程需要在三个科学领域的理解，这是该补助金的主要研究目标的显着进步。 这些目标是建立一个定量的，预测性的理解：（1）三元溶质添加在Al-Mg材料中对溶质拖曳蠕变变形机制的影响：（2）在溶质拖曳蠕变过程中，作为颗粒含量和溶质化学的函数，空穴的形核和生长;（3）通过更好地理解控制延展性的颈缩和空穴机制，研究受溶质-拖曳蠕变变形的材料的拉伸延展性。 CAREER教育活动包括以下四个基本目标：（1）通过将材料理论讲座与实践实验活动相结合，为本科生提供材料力学行为的独特教学方法;（2）利用研究经验和数据作为教育实例，在各类材料的力学行为方面提供独特的研究生课程;（3）将本科生纳入科学和工程研究，作为对他们教育的重大增强;（4）通过与现有的指导，推广和大学课程的联系，对高中生进行科学教育。 这项研究活动的成功预计将对制造业产生重大的长期影响。 经济的、增强延展性的铝合金的产生将显著降低作为制造替代的超塑性成形的价格。 ***

9702156 Taleff The engineering of economical, enhanced-ductility aluminum alloys requires significant advancements in understanding of three scientific areas, which are the principal research goals of this grant. These goals are to create a quantitative, predictive understanding of the following: (1) the effects which ternary solute additions in Al--Mg materials have on the solute-drag creep deformation mechanism; (2) the nucleation and growth of cavities during solute-drag creep as a function of particulate content and solute chemistry; and (3) the tensile ductility in materials subjected to deformation by solute--drag creep through a better understanding of the mechanisms of necking and cavitation, which govern ductility. The CAREER educational activities consist of four fundamental goals, as follows: (1) a unique instructional approach for undergraduates in the mechanical behavior of materials by incorporating lectures on materials theory with hands-on laboratory activities; (2) unique graduate courses in the mechanical behavior of various classes of materials which utilize research experience and data as educational examples; (3) incorporation of undergraduate students into scientific and engineering research as a significant enhancement to their educations; and (4) the scientific education of high-school students through association with existing mentoring, outreach, and University programs. %%% Success of this research activity is expected to have significant long-term effects in manufacturing. The creation of economical, enhanced-ductility aluminum alloys will significantly decrease the price of superplastic forming as a manufacturing alternative. ***