Hydrostatic extrusion of aluminum clad superconductor wire
Abstract
Acceptable combinations of process variables were studied for the production of a Nb-Ti superconducting alloy in a pure aluminum matrix by hydrostatic extrusion. Conditions for sound flow and defective flow are shown on plots of % reduction in area versus die semi-cone angle. The variables affecting the observed flow mode in hydrostatic extrusion of bimetal rod are reduction in area, die semi-cone angle, core to matrix strength ratio, core to matrix diameter ratio, bond strength between the core and the matrix, friction between the billet and the die, and receiver chamber pressure. In all cases there was a light mechanical bond between the two materials produced by interference fitting the cores into drilled holes. Results showed that increasing the receiver pressure increases the range of acceptable process variables to produce sound flow.
- Publication:
-
NASA STI/Recon Technical Report N
- Pub Date:
- June 1974
- Bibcode:
- 1974STIN...7513114S
- Keywords:
-
- Cladding;
- Extruding;
- Superconductors;
- Wire;
- Aluminum;
- Hydrostatic Pressure;
- Metal Coatings;
- Metal Matrix Composites;
- Metal Working;
- Engineering (General)