Plastic deformation of crystalline materials
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United States of America Patent
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May 7, 1996
Grant Date -
N/A
app pub date -
Jun 17, 1994
filing date -
Jun 17, 1994
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A method of plastic deformation of metals, alloys and other crystalline materials for controlling their structure and texture comprises the steps of extruding a workpiece through two intersecting passages having equal cross-sections corresponding to a cross-section of a workpiece, the pressing including determining during each passage of a workpiece three main directions corresponding to a flow direction, a perpendicular to the flow plane, and a perpendicular to the first mentioned and second mentioned directions, changing the directions during placement of a workpiece in its initial position for each passage relative to a corresponding position in a predetermined passage by turning the workpiece by a predetermined angle around axes of the main directions, and cyclically repeating the method.
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