Modelling of Light Mg and Al Based Alloys as “in situ” Composites

Ludmila Parashkevova, Pedro Egizabal

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

1 Citation (Scopus)

Abstract

The present paper is aimed to further elucidate the microstructure properties relationship of light alloys containing additional hard particles. The materials studded are magnesium alloys from the system AZ (Mg–Al–Mn–Zn) and mechanically alloyed aluminum reinforced with carbide and oxide particles. Strengthening and hardening phenomena in Metal Matrix Multiphase heterogeneous Materials (MMMM) are considered in this study from the view point of mechanics of nano- and micro-composites. A semi-analytical approach is adopted taking into account the manufacturing processing and microstructure features. Multilevel homogenization procedure is performed, accounting for size effects. In the model applied the metal matrix is considered as an elastic–plastic micropolar media and the hard phases (precipitations Mg17Al12, TiC, Al4C3, Al2O3) are treated as conventional elastic Cauchy materials. Experimentally observed dependence of the characteristic matrix length on the volume fraction of the hardening phases is modeled and numerically simulated in the case of ball-milled Al alloyed with Al4C3 and Al2O3. For AZ alloys the impact of intermetallic phase Mg17Al12 is discussed in the frame of presented composite model and the strengthening effect of the addition of small amount of TiC is estimated.
Original languageEnglish
Title of host publicationunknown
EditorsMichail Todorov, Ivan Georgiev, Krassimir Georgiev, Ivan Georgiev
PublisherSPRINGER INT PUBLISHING AG, GEWERBESTRASSE 11, CHAM, CH-6330, SWITZERLAND
Pages145-157
Number of pages13
Volume728
ISBN (Electronic)978-3-319-65530-7
ISBN (Print)978-3-319-65529-1, 9783319655291
DOIs
Publication statusPublished - 26 Oct 2017
Event11th Annual Meeting of the Bulgarian Section of the Society for Industrial and Applied Mathematics, BGSIAM 2016 - Sofia, Bulgaria
Duration: 20 Dec 201622 Dec 2016

Publication series

Name1860-949X

Conference

Conference11th Annual Meeting of the Bulgarian Section of the Society for Industrial and Applied Mathematics, BGSIAM 2016
Country/TerritoryBulgaria
CitySofia
Period20/12/1622/12/16

Keywords

  • Magnesium
  • AZ91
  • Modelling
  • Computational intelligence

Project and Funding Information

  • Project ID
  • info:eu-repo/grantAgreement/EC/FP7/290526/EU/Innovative materials solutions for Transport, Energy and Biomedical sectors by strengthening integration and enhancing research dynamics of KMM-VIN/INNVIN
  • info:eu-repo/grantAgreement/EC/FP7/314582/EU/Development of a new high performance material associated to a new technological Energetic, Flexible, Economical, Versatile and Ecological process to make super strong and lightweight components/EFEVE
  • Funding Info
  • European Commission. FP7 GA 290526 iNVINN; FP7 GA 314582 EFEVE

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