The role of microstructure and texture in controlling mechanical properties of AZ31B magnesium alloy processed by I-ECAP

Michal Gzyl, Andrzej Rosochowski, Sonia Boczkal, Lech Olejnik

Research output: Contribution to journalArticle

54 Citations (Scopus)
100 Downloads (Pure)

Abstract

Abstract Mechanical properties of AZ31B magnesium alloy were modified in this work by various processing routes of incremental equal channel angular pressing (I-ECAP) followed by heat treatment. Possible strategies for improving ductility and strength of the alloy were investigated. Processing by routes A and BC showed that texture plays predominant role in controlling mechanical properties at room temperature. Four passes of I-ECAP by route C followed by annealing enhanced ductility up to 0.35 of true strain. It was found that tensile twinning was important in accommodating strain during tensile testing, which resulted in a very good hardening behaviour. The yield strength was improved to 300 MPa by refining grain size to 0.8 µm in I-ECAP at 150 °C. The obtained structure and properties were shown to be stable up to 150 °C. True strain at fracture was increased to 0.2 after annealing at 150 °C without lowering strength.
Original languageEnglish
JournalMaterials Science and Engineering: A
Volume638
Early online date27 Apr 2015
DOIs
Publication statusPublished - 25 Jun 2015

Keywords

  • magnesium alloys
  • equal channel angular pressing (ECAP)
  • severe plastic deformation (SPD)
  • ultra-fine grained (UFG) material
  • electron backscatter diffraction (EBSD)

Fingerprint Dive into the research topics of 'The role of microstructure and texture in controlling mechanical properties of AZ31B magnesium alloy processed by I-ECAP'. Together they form a unique fingerprint.

Cite this