Upper-bound analysis of equal channel angular extrusion using linear and rotational velocity fields

Materials and Design

Volumn 30, Issue 1, 2009, Pages 28-34

  Reihanian, M ^a   Ebrahimi, R ^b   Moshksar, M M ^b  

^a SHAHID CHAMRAN UNIVERSITY OF AHVAZ   (Iran)

^b SHIRAZ UNIVERSITY   (Iran)

Author keywords

Extrusion (C); Plastic behavior (F)

Indexed keywords

BOUNDARY POINTS; CONSTANT FRICTION FACTOR; CORNER RADIUS; DISCONTINUITY SURFACES; EQUAL CHANNEL ANGULAR EXTRUSION (ECAE); LINEAR VELOCITIES; PLASTIC DEFORMATION ZONE (PDZ); ROTATIONAL VELOCITY; TOTAL POWER LOSS; UPPER BOUND ANALYSIS;

EIGENVALUES AND EIGENFUNCTIONS; EXTRUSION; EXTRUSION DIES; HIGH ENERGY FORMING; PLATES (STRUCTURAL COMPONENTS);

FORMING;

EID: 48549088466     PISSN: 02641275     EISSN: None     Source Type: Journal    
DOI: 10.1016/j.matdes.2008.04.059     Document Type: Article

References (19)

1. Segal V.M., Reznikov V.I., Drobyshevski A.E., and Kopylov V.I. Plastic working of metals by simple shear. Russ Metall 1 (1981) 99-105
2. Valiev R.Z., Islamgaliev R.K., and Alexandrov I.V. Bulk nanostructured materials from severe plastic deformation. Prog Mater Sci 45 (2000) 103-189
3. Horita Z., Fujinami T., and Langdon T.G. The potential for scaling ECAP: effect of sample size on grain refinement and mechanical properties. Mater Sci Eng A 318 (2001) 34-41
4. Segal V.M. Engineering and commercialization of equal channel angular extrusion (ECAE). Mater Sci Eng A 386 (2004) 269-276
5. Zhu Y.T., Lowe T.C., and Langdon T.G. Performance and applications of nanostructured materials produced by severe plastic deformation. Scripta Mater 51 (2004) 825-830
6. Prangnell P.B., Harris C., and Roberts S.M. Finite element modeling of equal channel angular extrusion. Scripta Mater 37 (1997) 983-989
7. Semiatin S.L., Delo D.P., and Shell E.B. The effect of material properties and tooling design on deformation and fracture during equal channel angular extrusion. Acta Mater 48 (2000) 1841-1851
8. Kim H.S., Seo M.H., and Hong S.I. Plastic deformation analysis of metals during equal channel angular extrusion. J Mater Process Technol 113 (2001) 622-626
9. Li S., Bourke M.A.M., Beyerlein I.J., Alexander D.J., and Clausen B. Finite element analysis of deformation zone and working load in equal channel angular extrusion. Mater Sci Eng A 382 (2004) 217-236
10. Bowen J.R., Gholina A., Roberts S.M., and Prangnell P.B. Analysis of the billet deformation behavior in equal channel angular extrusion. Mater Sci Eng A 287 (2000) 87-99
11. Segal V.M. Slip line solutions, deformation mode and loading history during equal channel angular extrusion. Mater Sci Eng A 345 (2003) 36-46
12. Lee D.N. An upper-bound solution of channel angular deformation. Scripta Mater 43 (2000) 115-118
13. Alkotra J., and Sevillano J.G. A comparison of FEM and upper-bound type analysis of equal channel angular extrusion. J Mater Process Technol 141 (2003) 313-318
14. Perez C.J.L. Upper bound analysis and FEM simulation of equal fillet radii angular pressing. Model Simul Mater Sci Eng 12 (2004) 205-214
15. Altan B.S., Purcek G., and Miskioglu I. An upper-bound analysis for equal-channel angular extrusion. J Mater Process Technol 168 (2005) 137-146
16. Eivani A.R., and Karimi Taheri A. An upper bound solution of ECAE process with outer curved corner. J Mater Process Technol 182 (2007) 555-563
17. Avitzur B., and Pachla W. The upper-bound approach to plain strain problems using linear and rotational velocity fields-part I: basic concepts. J Eng Ind 168 (1986) 295-306
18. Avitzur B., and Pachla W. The upper-bound approach to plain strain problems using linear and rotational velocity fields-part II: applications. J Eng Ind 168 (1986) 307-316
19. Ebrahimi R., and Najafizadeh A. A new method for evaluation of friction in bulk metal forming. J Mater Process Technol 152 (2004) 136-143