Investigating the effects of hardening of aluminium alloys on equal-channel angular pressing-A finite-element study

Karpuz P., Simsir C., GÜR C. H.

Materials Science and Engineering A, cilt.503, ss.148-151, 2009 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 503
  • Basım Tarihi: 2009
  • Doi Numarası: 10.1016/j.msea.2008.01.095
  • Dergi Adı: Materials Science and Engineering A
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.148-151
  • Anahtar Kelimeler: Equal-channel angular pressing, Strain hardening behavior, Finite element modeling, SEVERE PLASTIC-DEFORMATION, SIMPLE SHEAR, NANOSTRUCTURED MATERIALS, GRAIN-REFINEMENT, TOOL-ANGLES, EXTRUSION, BEHAVIOR, METALS, MULTISCALE, STRESS
  • Orta Doğu Teknik Üniversitesi Adresli: Evet

Özet

Equal-channel angular pressing (ECAP) is a promising severe plastic deformation method for production of ultrafine-grained bulk metals and alloys with considerably improved mechanical properties. In this study, numerical experiments were carried out to investigate the effect of strain hardening of aluminum alloys on the process performance of ECAP via finite element modeling. In the constitutive model, isothermal-plane strain, frictionless condition was assumed. The numerical results showed that strain hardening behavior strongly affects the deformation homogeneity and process performance, mainly due to corner gap formation in the workpiece. © 2008 Elsevier B.V. All rights reserved.