Mm. Potapenko et al., MANUFACTURE OF SEMIFINISHED ITEMS OF ALLOYS V-4TI-4CR AND V-10TI-5CR FOR USE AS A STRUCTURAL MATERIAL IN FUSION APPLICATIONS, Journal of nuclear materials, 237, 1996, pp. 438-441
Citations number
2
Categorie Soggetti
Nuclear Sciences & Tecnology","Mining & Mineral Processing","Material Science
Vanadium-titanium-chromium alloys are considered as structural materia
ls with the most appropriate properties for fusion applications, Howev
er, the final ratio V-Ti-Cr in an alloy is not yet determined. On the
one hand, it is offered to optimize structure on the basis of an alloy
V-4Ti-4Cr. On the other hand, it is proposed that the optimum of tota
l Ti and Cr content should be near 15%, and the Ti to Cr ratio should
be 2:1. Melting, casting and processing by pressure of ingots of vanad
ium alloys V-4Ti-4Cr and V-10Ti-5Cr weighing as much as 50 kg are cons
idered in the report, The ingots in diameters up to 130 mm were obtain
ed by melting in vacuum-are furnaces. Results on chemical uniformity a
nd structure of the ingots are presented. A basic scheme of semifinish
ed items manufacture is submitted, Rod and tube hot extrusion conditio
ns are presented. A new technology for protection of ingot and billet
surface from gases during hot processing is used to discard applicatio
n of protective stainless steel and to lower temperature of processing
, Sheet and tube products were made from extruded billets by cold roll
ing with intermediate heat treatment. The list of obtained products, i
ncluding sheets 0.5-5 mm thick, rods 10-18 mm in diameter and tubes fr
om 50 mm up to 6.0 mm in diameter is presented, The availability of la
rge-scale ingots processing with weight above 300 kg is discussed.