Synergistic Toughening of Nickel Aluminides

拟议的研究将结合微观力学和材料科学的概念来开发协同增韧的NiAl复合材料，该复合材料由涂层氧化铝桥接纤维和部分稳定的氧化锆颗粒组成。NiAl的协同增韧概念是利用马氏体相变和纤维增强复合材料设计具有最佳韧性的新型先进材料的一种新方法。提议的工作是多学科的，与NASA刘易斯的合作加强了提议，并促进了提议的协同增韧NiAl材料的生产。这项工作是高风险的，但如果成功，它将产生对转化和桥接作为复合材料增韧机制之间协同作用的基本理解。＊＊＊

9634870 Soboyejo The proposed research will integrate micromechanics and materials science concepts to develop synergistically toughened NiAl composites that consist of coated alumina bridging fibers and partially stabilized zirconia particles. The concept of synergistic toughening of NiAl is a novel method of utilizing what is known about martensitic transformation and fiber reinforced composites to design new advanced material with optimal toughness. The proposed work is multidisciplinary and collaboration with NASA Lewis strengthens the proposal and facilitates the production of the proposed synergistically toughened NiAl materials. The proposed work is high risk but if successful it will generate fundamental understanding of the synergy between transformation and bridging as operative toughening mechanisms in composites. ***