Apparatus and method for uniform shear deformation

Details Apparatus and method for uniform shear deformation Apparatus and method for uniform shear deformation

2006-11-28

2006-11-28

Tolan, Ed (Department: 3725)

Metal deforming

By extruding through orifice

By rotating impeller means

C072S253100, C072S270000

Reexamination Certificate

active

07140222

ABSTRACT:
A shear deformation apparatus comprises: a die having an inlet and an outlet; and a rotatable device installed at a shear zone for supporting a material introduced into the inlet of the die and thus changing a direction of the material to the outlet of the die, of which the surface moves together with the material. According to the apparatus, a frictional resistance between the material and the die is reduced and a generation of a dead zone is prevented, thereby reducing a deformation resistance and having a uniform shear deformation.

REFERENCES:
patent: 6370930 (2002-04-01), Lee et al.
patent: 6571593 (2003-06-01), Chung et al.
patent: 6895795 (2005-05-01), Chaudhury et al.
“An Experimental Study of Equal Channel Angular Extrusion”, Scripta Materialia, vol. 37, No. 4, 1997, pp. 437-442.
“Processing Nanostructured Materials: An Overview”, Journal of Metals, Dec. 2000, pp. 41-45.
“Effect of Die Shape on the Deformation Behavior in Equal-Channel Angular Pressing”, Metallurgical and Materials Transactions A, vol. 32A, Dec. 2001, pp. 3007-3014.

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