Creation of High Performance Nano-Meso Harmonic Structure Materials and the Evaluation of Their Mechanical Properties

本研究的目的是揭示具有“纳/介谐结构”的结构材料的高性能化机理。在金属材料中，通过谐波结构控制分散应力集中导致更好的机械性能。在陶瓷材料中，粗颗粒分散抑制直线裂纹扩展。因此，裂纹扩展速率降低，可以获得更高的韧性。

Objective of the research is to reveal the mechanisms of high performance properties of structural materials which have the "Nano/Meso Harmonic Structure". In the metallic material, scatter of the stress concentration by the harmonic structure control leads to better mechanical properties. In the ceramic materials, coarse particle dispersion suppresses straight crack propagation. Thus, the crack propagation rate decreases and the higher toughness can be obtained.