|About this Abstract
||Materials Science & Technology 2019
||Emergent Materials under Extremes and Decisive In-situ Characterizations
||Interface Design for Radiation Resistant Metallic Nanocomposites
||Youxing Chen, Jian Wang, Xinghang Zhang
|On-Site Speaker (Planned)
Materials subjected to irradiation often experience severe damage in the form of various types of defects, such as point defects, dislocations, bubbles/voids, which cause significant degradation of their mechanical properties. Interfaces can act as sinks – absorbing, trapping and manipulating radiation-induced defects and evading formation of defect clusters in grain interiors. Using controllably designed two-dimensional planar interfaces (grain boundaries, twin boundaries and immiscible interphase interfaces), we demonstrated interface characteristics, including interface structures such as coherent structures and misfit dislocation networks, and interface thermodynamic properties such as formation and migration of defects in interfaces determines the sinking efficiency of interfaces. A high density of thermodynamically stable interfaces with designed interface characteristics would show great radiation tolerance, which will provide insights to the design of advanced nanomaterials with unprecedented radiation tolerance.
||Definite: At-meeting proceedings