Route effects in I-ECAP of AZ31B magnesium alloy

Michal Zbigniew Gzyl, Andrzej Rosochowski, Evgenia Yakushina, Paul Wood, Lech Olejnik

Research output: Contribution to journalArticle

11 Citations (Scopus)
84 Downloads (Pure)

Abstract

An AZ31B wrought magnesium alloy was processed by incremental equal channel
angular pressing (I-ECAP) using routes A and BC. Despite the fact that the measured grain size for both routes was very similar, the mechanical properties were different. Tensile strength was improved using route A comparing to route BC, without ductility loss, while tension-compression anisotropy observed for route A was significantly suppressed when using route BC. Moreover, billet shape evolution resulting from subsequent passes of I-ECAP was studied. Significant distortion after processing using route BC and no occurrence of such effect for route A were observed. Results of a finite element analysis showed that non-uniform strain rate sensitivity might be responsible for different billet shapes. The conclusion is drawn that processing route has a strong influence on the billet shape and mechanical properties when processing magnesium alloys by I-ECAP.
Original languageEnglish
Pages (from-to)876-884
Number of pages9
JournalKey Engineering Materials
Volume554-557
DOIs
Publication statusPublished - 2013
Event16th Esaform Conference - Aveiro, Portugal
Duration: 22 Apr 201324 Apr 2013

Keywords

  • equal channel angular pressing
  • magnesium alloys
  • ultrafine grained metals

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