Mitra Taheri1,Emily Hopkins1,Ryan Jacobs2,Priyam Patki3,Kevin Field3,Dane Morgan2,Jaime Marian4,David Srolovitz5,6
Johns Hopkins University1,University of Wisconsin–Madison2,University of Michigan–Ann Arbor3,University of California, Los Angeles4,The Hong Kong University5,University of Pennsylvania6
Mitra Taheri1,Emily Hopkins1,Ryan Jacobs2,Priyam Patki3,Kevin Field3,Dane Morgan2,Jaime Marian4,David Srolovitz5,6
Johns Hopkins University1,University of Wisconsin–Madison2,University of Michigan–Ann Arbor3,University of California, Los Angeles4,The Hong Kong University5,University of Pennsylvania6
Achieving radiation tolerance in crystalline materials will require a thorough understanding of defect evolution and corresponding material responses to ion bombardment. Tailoring grain boundaries to behave as enhanced defect sinks poses a potential solution toward the development of more radiation tolerant materials; however, critical nuances illustrating the microstructural response of grain boundaries under irradiation have yet to be explained. In particular, the relationship between GB structural states and their effect on the rate of defect absorption is unclear. In this study, we utilize automated object detection models of in situ TEM experiments to offer new insight into transient GB states and analyze cyclic absorption behavior. By providing an indicator of changes in GB absorption mechanisms and recognizing GB absorption responses in real time, we move closer to explaining GB metastability with the onset of radiation damage.