Abstract:
Material with high strength, good ductility, plastic flow stability, thermal stability, and irradiation tolerance are in urgent demand for advancing their applications in various environments, especially for improving the safety and efficiency of advanced nuclear reactor. Materials that employ microstructure features to improve strength, ductility and plastic flow stability, as well manage radiation damage and maintain high-temperature mechanical properties are especially desirable. To accelerate the discovery and design of such superb materials and advance their applications, multiscale computation-experiment synergy has demonstrated to be essential. My research is focusing on light-weight structural materials, high strength/ductile materials, radiation-damage tolerant materials, multi-principal elements and/or multiphase alloys, and metal-based and ceramic-based composites for applications under extreme conditions, with emphasis on Understanding interface and defect phenomena, Developing the Defects-Microstructures-Properties relations, Designing alloys with desired microstructures and dominant deformation modes, and Predicting mechanical and irradiation behaviors of these alloys through integrating multiscale experimental techniques and modelling tools. In this talk, I will discuss how to synergize multiscale computation-experiment efforts to discovery unique deformation mechanisms related to characteristic microstructure, design materials with characteristic microstructure which enables superb properties, and describe composition-microstructure-properties constitutive laws of materials via the development of multiscale material models.