Equal channel angular extrusion of difficult-to-work alloys

Details Equal channel angular extrusion of difficult-to-work alloys Equal channel angular extrusion of difficult-to-work alloys

1998-05-11

1999-05-18

Hail, III, Joseph J.

Metal deforming

By extruding through orifice

72272, 72377, B21C23/00

Patent

active

059040629

ABSTRACT:
A method is described for producing homogeneous wrought microstructure during equal channel angular extrusion of difficult-to-work high temperature alloys that exhibit a high degree of flow softening at hot-working temperatures, wherein flow non-uniformities are minimized by imparting an increment of initial upset deformation to an alloy immediately preceding shear flow through the deformation zone.

REFERENCES:
patent: 5309748 (1994-05-01), Jarrett et al.
patent: 5400633 (1995-03-01), Segal et al.
patent: 5513512 (1996-05-01), Segal
patent: 5600909 (1997-02-01), Segal et al.
"Working of Metals by Simple Shear Deformation Process," by Segal et al Proceedings Fifth International Aluminum Technology Seminar, vol. 2, 403-6 (1992).
"Plastic Working of Metals by Simple Shear," by Segal et al Russ Metall, vol. 1, 99-105 (1981).

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