Abstract
In the restacked rod process (RRP ® ) Nb3Sn wires studied, Ti doping is achieved by replacing some Nb filaments with the standard Nb-47 wt% Ti alloy. We observed that, after full heat treatment, the amount of Ti in Nb 3 Sn does not increase linearly with the nominal doping, suggesting segregation of Ti. We found that, locally, at the doping sites, the Ti content can be as much as an order of magnitude higher than nominal, but this is not always the case: the composition at the doping sites varies dramatically. Furthermore, in the highest nominal doping wire studied, Ti-containing compounds were also observed surrounding the Cu-Sn core. The relative composition trend of Cu and Ti appears to go in opposite directions. Using Auger electron spectroscopy (AES), significant spatial variations of Ti concentration were found, and Ti LMV peak broadening was observed at the original doping sites.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
