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材料的环境行为与失效机理首席科学家:韩恩厚(中科院金属所)本项目拟研究在我国自然环境和典型特殊环境下的材料行为,采用理论分析、原位观察、计算机模拟,以及多种监检测手段的交叉复合与集成方法,注重多因素耦合作用所致的非线性特征、材料与环境界面交互作用的动力学过程,从宏观、细观和微观诸方面探讨材料在使用环境中性能演化的全过程,以力学/化学/材料的交互作用为重点,发展环境因素与材料交互作用的非线性耦合理论;以局部化为重点,发展在环境中损伤演化的微细观理论;以短裂纹扩展为主,兼顾损伤的全过程,材料环境行为的模型与寿命预测和控制理论。发展材料损伤早期监检测、材料与结构寿命评估和损伤恢复三类示范性技术;在此基础上,形成针对我国典型环境下材料抗环境损伤的性能评估体系和科学使用材料的指导准则。
Material Environmental Behavior and Failure Mechanism Principal Scientist: Han Enhou (Institute of Metals, Chinese Academy of Sciences) This project intends to study the behavior of materials under natural environment and typical special environment in China. The theoretical analysis, in situ observation, computer simulation and various monitoring and measuring methods Cross-compositing and integration methods, focusing on the nonlinear characteristics caused by multi-factor coupling and the dynamic process of the interaction between material and environment interface, and discussing the whole process of material performance evolution in the environment from macro, micro and micro aspects , A nonlinear coupling theory that focuses on the interaction of mechanics / chemistry / materials, and develops the nonlinear coupling theory of interaction between environmental factors and materials; the micro-view theory of damage evolution in the environment focusing on localization; Taking into account the whole process of damage, material environmental behavior model and life expectancy and control theory. Development of early monitoring of material damage monitoring, material and structure of life assessment and damage recovery of three types of demonstration technology; On this basis, the formation of a typical environment for China's anti-environmental damage performance evaluation system and guidelines for the use of materials.