Damage Mechanisms in Irradiated Metallic Glasses
Richard Baumer (MIT), Michael Demkowicz (MIT)
Materials for Extreme Environments: Multiscale Experiments and Simulations
Mon 9:00 - 10:30
Salomon 203
Metallic glasses are known to respond to radiation in qualitatively different ways than crystalline alloys. Here, we identify the mechanisms responsible for macroscale radiation damage through a simulation of ½ MeV ion irradiation with a ½ billion-atom molecular dynamics simulation in an amorphous alloy. We find that radiation creates nanometer-scale zones with rapidly quenching liquids, leading to stress pulses that cause polarized plastic deformation adjacent to liquid zones.