Effect of Aluminum Ion Irradiation on Chemical and Phase Composition of Surface Layers of Rolled AISI 321 Stainless Steel

Commercial rolled AISI 321 stainless steel samples were irradiated with Al+ ions an energy of 80 keV and fluence 1017 ion/cm2. The effect Al implantation on the chemical phase composition surface layer was studied by X-ray electron spectroscopy grazing beam mode diffraction analysis. A thin down to a depth 30 nm after consists mainly metal oxides. In near-surface layers 5 in depth, noticeable depletion chromium nickel observed. (up 0.5 µm) non-irradiated steel, addition f.c.c. austenite ?-phase, up 20 vol% b.c.c. ??-phase, which formed at rolling as result mechanical deformation. results significant increase ??-phase amount 2 µm. It is indicated that observed ? ? ?? transformation ion irradiation proceeds predominantly post-cascade shock waves, but not changes.