Aspects of ion irradiations to study localized deformation in austenitic stainless steels

作者：Jiao Zhijie^*; Was Gary; Miura Terumitsu; Fukuya Koji

来源：Journal of Nuclear Materials, 2014, 452(1-3): 328-334.

DOI：10.1016/j.jnucmat.2014.05.058

The effect of irradiation depth on localized deformation in strained SUS304 and SUS316 was assessed by irradiation to various doses using different energies of Fe++ and protons. The average height and spacing of slip steps formed on the surfaces after 2% plastic strain in 300 degrees C argon were characterized using AFM and SEM. The step height and spacing were nearly unchanged for irradiation depth greater than 1/3 of the average grain size. 2.8 MeV Fe++ irradiation, with an irradiation depth of <1 mu m, resulted in slightly larger step spacing compared to the unirradiated samples but it was much smaller compared to that in proton-irradiated samples with much greater irradiation depths. Step height and spacing also appeared to be affected by the grain size as they were nearly double in magnitude for 30 mu m compared to 14 mu m grain sizes in SUS304.

• 出版日期2014-9