Polycrystalline 3C SiC was irradiated and observed in-situ via Transmission Electron Microscopy with a 20 keV He ion beam at 400, 800, 1000 1200 °C the Microscopes Ion Accelerators for Materials Investigations facility. During irradiations, black-spot damage 3.1, 1.1, 2.1 dpa respectively. Helium bubbles were after 6.3 400 800 °C, platelets seen 1.1 but not during irradiation. This work shows f...