Severe plastic deformation by incremental angular splitting

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Abstract

A new way of generating large plastic strain in a billet by splitting it plastically by a reciprocating punch is investigated. The concept of incremental angular splitting (I-AS) is explained by referring to the severe plastic deformation process of incremental equal channel angular pressing (I-ECAP). Results of laboratory trials of I-ECAP and I-AS, using a purposely designed AA1070 billet, are presented and both processes compared. Further comparison is based on Vickers hardness distribution in the billet subjected to I-ECAP and I-AS. FE simulation results give an indication of strain distribution in both processes. The main advantages of I-AS appear to be more flexibility in the billet choice and more uniform strain distribution in the first pass of the process. A possibility of creating a gradient material by I-AS with a flat punch is considered.
Original languageEnglish
Pages (from-to)4557-4562
Number of pages6
JournalJournal of Materials Science
Volume48
Issue number13
Early online date5 Jan 2013
DOIs
Publication statusPublished - Jul 2013
EventEMRS 2012 - Symposium O - Warsaw, United Kingdom
Duration: 17 Sep 201221 Sep 2012

Keywords

  • severe plastic deformation
  • ultrafine grained metals
  • equal channel angular pressing
  • incremental forming

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