INVESTIGATION OF VANADIUM ALLOYS IN CTR PLASMA DISRUPTION-SIMULATION EXPERIMENTS

The experimental results of vanadium-based alloys behavior in CTR plas ma disruption-simulation experiments have been presented. The samples have been irradiated by high temperature pulsed deuterium plasma fluxe s (HTPPF) in an accelerator type MK-200. The flux specific power Q has been (0.5, 2.0, and 10) x 10(10) W/m(2), impulse duration tau about 5 0 mu s, and the number of impact impulses N = 5 and 30, respectively. The radiation erosion, material topography changes, structure, element and phase quality content, and face hardening have been investigated. It has been shown that for all the investigated alloys HTPPF irradiat ion results in topography changes and material erosion caused by their intensive heal, melting, and evaporation. The mass loss changes from 1.6 to 32 mu g/J and depends on irradiation regime (Q) and material ty pe. Hard action results in cracking of materials caused by thermal str esses.