Properties of Ti alloyed multifilamentary Nb3Sn wires by internal tin process

Influence of Ti addition to the Sn core on the critical current density Jcof multlfilamentary Nb3Sn wires fabricated by the internal tin process was studied. The addition ( ∼1.5 wt% Ti) improved the values of Jcat very high magnetic fields over those for the pure Nb3Sn, e.g.,Jc ~ 140A/mm2at 18 T. This is 3-4 times greater than a similarly processed pure Nb3Sn wire and is within ∼10 % of the highest critical current density measured for the Ti alloyed bronze processed Nb3Sn wires.