Surface effects under the action of pulsed beams of nitrogen ions and nitrogen plasma on Ti-Al-V alloy

Abstract

We present results of experiments on the action of nanosecond pulsed beams of nitrogen ions and nitrogen plasma on specimens of Ti-4 Al-3 V (wt %) alloy that were obtained using a plasma focus device. Two regimes of material treatment were studied: a high energy irradiation (with radiation power density of 10 8 W/cm 2 ), where the surface layer is melted, and a softer irradiation regime (with radiation power density of 10 7 W/cm 2 ), where a liquid phase on the surface is not formed. The mechanisms of surface modification and hardening of Ti-4 Al-3 V alloy corresponding to different irradiation regimes are discussed.