High-purity and commercial-purity austenitic stainless steels were subjected to proton bombardment. High-purity samples of Fe-20Cr-9Ni, Fe-20Cr-24Ni and Ni-18Cr-8Fe were bombarded with 3.2MeV protons, at between 300 and 600C, to a dose of up to 3dpa. Commercial-purity samples were bombarded to doses of between 0.3 and 5dpa at 360C. It was found that the dose and temperature dependences of the loops and voids in proton-bombarded microstructures were consistent with the trends in neutron-bombardment results.

Microstructure Evolution in Austenitic Fe-Cr-Ni Alloys Irradiated with Protons - Comparison with Neutron-Irradiated Microstructures. J.Gan, G.S.Was: Journal of Nuclear Materials, 2001, 297[2], 161-75