Industrial application of niobium titanium superconducting alloy

Niobium-titanium superconducting alloy brands include Nb-44Ti, Nb-46.5 Ti, Nb-48Ti, Nb-50Ti and Nb-53Ti.As far as the application of these different components of niobium titanium superconducting materials is concerned, those with low titanium content are suitable for making superconducting magnets with high field, while those with high titanium content are suitable for making superconducting magnets with low field.

The uniformity and plasticity of alloy ingot niobium and titanium belong to different groups of metals.

In niobium-titanium alloy casting process, niobium non-fused block is easy to appear, which affects the uniformity and plasticity of alloy components.

In addition, niobium and titanium have high activity to interstitial elements (nitrogen, oxygen, carbon, hydrogen, etc.), strong chemical affinity, easy to exceed the allowable component in the alloy, which has a serious impact on the processing of alloy ingots.

The high homogeneity and excellent plasticity of niobium-titanium superconductor alloy are the important factors to obtain high critical current density. The critical current density of niobium titanium superconductor is greatly influenced by the dispersion distribution of the precipitation nailing phase and the final large drawing strain after multiple cold processing and heat treatment.

It can be seen that ingot casting is a crucial problem for the preparation of niobium titanium alloy with high uniformity and low impurity content.