Process and apparatus for making in-situ-formed multifilamentary

Metal deforming – With use of control means energized in response to activator... – Including plural sensors or sensor responsive to comparison...

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72 183, 72286, B21C 900

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057877475

ABSTRACT:
Methods and apparatus are disclosed for maximizing the strength and deformability of dimensionally-reduced in-situ-formed composites. According the invention, the temperature of the composite is maintained at less than its recrystallization temperature as it is dimensionally reduced, such as by drawing it through one or more dies in a wire-drawing apparatus. The drawing speed and other parameters may be adjusted, as required, to control composite temperature.

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patent: 4820896 (1989-04-01), Weil
patent: 4883545 (1989-11-01), Matlock
Bevk et al., "High Temperature Strength and Fracture Mode of In Situ Formed Cu-Nb Multifilamentary Composites," in New Developments and Applications in Composites, Symposium Proc. TMS-AIME Physical Metallurgy and Composites Committees at the TMS-AIME Fall Mtg. St. Louis, Missouri, Oct. 16-17, 1978, pp. 101-113.
Bevk et al., "Anomalous Increase in Strength of In Situ Formed Cu-Nb Multifilamentary Composites," J. Appl. Phys., 49(12), pp. 6031-6038, Dec. 1978.
Karasek et al., "Normal-State Resistivity of In Situ-Formed Ultrafine Filamentary Cu-Nb Composites," J. Appl. Phys., 52(3), pp. 1370-1375, Mar. 1981.
Bevk, "Ultrafine Filamentary Composites," Ann. Rev. Mater. Sci., V.13, pp. 319-338, 1983.
Boebinger et al., "Building World-Record Magnets," Sci. Amer., 272(6), pp. 34-40, Jun. 1995.

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