|About this Abstract
||2022 TMS Annual Meeting & Exhibition
||Seeing is Believing -- Understanding Environmental Degradation and Mechanical Response Using Advanced Characterization Techniques: An SMD Symposium in Honor of Ian M. Robertson
||Uncovering the Limits of Grain Boundary Stability through In Situ and In Operando Characterization
||Mitra L. Taheri, Jaime Marian, David Joseph Srolovitz
|On-Site Speaker (Planned)
||Mitra L. Taheri
Grain boundary (GB) stability may be defined as the ability of a GB to continue to absorb point defects without becoming saturated and without changing its macroscopic degrees of freedom (misorientation, inclination), or degrees of freedom. Much debate revolves around local GB stresses and how they evolve with radiation. Through the use of quantitative in situ microscopy, atomic and mesoscale simulations, and machine learning, we explore how GBs evolve as a function of point defect absorption, and specifically, how local stresses evolve throughout the dynamic radiation process. The results have profound implications in developing thermally stable, bulk nanocrystalline materials, and damage tolerant materials.