Finite Element Analysis of Deformation of Cp-Ti by Multi-Pass Equal Channel Angular Extrusion at Medium Hot-Working Temperature

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The plastic deformation of commercially pure (CP) titanium by multi-pass equal channel angular extrusion (ECAE), at medium hot-working temperature, was simulated using finite element method. The effect of ECAE deformation was to uniformly deform the middle billet by simple shear and to induce a side shift of un-deformed and un-moved billet-ends so as to preserve its original shape during deformation. Unlike the single ECAE pass, where the corner gap is important, it was the repetitive billet-end side-shift of less-deformed billet-ends which are responsible for the development of the non-uniformly deformed zone in the multi-pass ECAE processing via route A. The deformation zone was however little affected in the multi-pass EACE processing via route C, because of the alternate sense of billet-end side-shift. The simulation well predicted the inclination angles of elongated-grain in the multi-pass ECAE deformation.
Publisher
Elsevier
Issue Date
2007-02
Keywords

Finite element analysis; Equal channel angular extrusion; Titanium Flow pattern; Flow pattern; Severe plastic deformation

Citation

Materials Science and Engineering A, Vol.447, No.1-2, pp.134-141

ISSN
0921-5093
DOI
10.1016/j.msea.2006.10.068
URI
http://hdl.handle.net/10203/10549
Appears in Collection
ME-Journal Papers(저널논문)

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