Structure of a titanium-alloyed high-tin bronze obtained by the Osprey method View Full Text


Ontology type: schema:ScholarlyArticle     


Article Info

DATE

2010-08

AUTHORS

I. L. Deryagina, E. N. Popova, S. V. Sudareva, E. P. Romanov, L. V. Elokhina, E. A. Dergunova, A. E. Vorob’eva, I. M. Abdyukhanov

ABSTRACT

The titanium-alloyed bronzes with enhanced (14.5 and 15.5 wt %) tin content obtained by the Osprey method have been studied by the methods of optical, scanning, and transmission electron microscopy with the use of quantitative microanalysis in the initial state and after hot extrusion. These alloys have been employed as bronze matrices of multifilamentary superconducting Nb/Cu-Sn composites. An increase in the tin content in the bronze matrix makes it possible to enhance the critical current density of the multifilamentary composite owing to the improvement of the structure and composition of a superconducting Nb3Sn compound that is formed upon diffusion annealing. It has been shown that the Osprey technology allows one to obtain bronzes with an enhanced Sn content and simultaneously to reduce the dendritic segregation characteristic of cast bronzes. The distribution of Sn and Ti in these alloys has been investigated. A more homogeneous structure in the initial state is characteristic of the alloy Cu-14.5Sn-0.24Ti (wt %). The increase in the tin content to 15.5 wt % leads to the formation of microregions of dendritic segregation with an (α + δ) eutectoid in the initial state, which slightly decreases plastic characteristics of this bronze. More... »

PAGES

162-174

Identifiers

URI

http://scigraph.springernature.com/pub.10.1134/s0031918x10080065

DOI

http://dx.doi.org/10.1134/s0031918x10080065

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1052885773


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