Effects of Die Geometry on Variation of the Deformation Rate in Equal Channel Angular Pressing

Title
Effects of Die Geometry on Variation of the Deformation Rate in Equal Channel Angular Pressing
Authors
한준현지광구장형준오규환
Keywords
equal channel angular pressing (ECAP); deformation rate; maximun shear deformation; curvature angle; oblique angle; zero dilatation line
Issue Date
2009-06
Publisher
Metals and Materials International
Citation
VOL 15, NO 3, 439-445
Abstract
The deformation behavior within the deformation zone of a workpiece during equal channel angular pressing (ECAP) was investigated using the finite element method. The effects of die geometry on the variations of normal and shear deformations were studied with a deformation rate tensor (D). The zero dilatation line, at which the normal components (D11 and D22) of the deformation rate tensor (D) are zero, in the die coincided with the line of intersection of the two die channels irrespective of die geometry such as curvature angle (Ψ) and oblique angle (Φ), while the maximum shear line, at which the shear components (D12 and D21) of the deformation rate tensor (D) have maximum value, is dependant on the die geometry.
URI
http://pubs.kist.re.kr/handle/201004/36354
ISSN
1598-9623
Appears in Collections:
KIST Publication > Article
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