Deformation and failure of an Al-Mg alloy investigated through multiscale microstructural models

Andrew C. Magee, Leila Ladani

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The microscale deformation of an Al-Mg alloy with a bimodal grain size distribution, consisting of coarse grains (CGs) and ultrafine grains (UFGs) is studied through finite element methods. Procedurally generated models are created to characterize the behavior of this microstructure at different scales. The mechanical response of individual grains is represented through crystal plasticity laws, which include accommodations for solute and grain size strengthening effects. These effects are quantified through multiscale models allowing for experimental calibration. Additionally, the behavior of grain boundaries is included through cohesive interface models. Using these techniques, grain scale deformation is characterized, load distribution between the two phases is examined, and the roles of crystal anisotropy and interface accommodation are considered.

Original languageEnglish (US)
Title of host publicationLight Metals 2015 - At the TMS 2015 Annual Meeting and Exhibition
EditorsMargaret Hyland, Margaret Hyland
PublisherMinerals, Metals and Materials Society
Pages245-249
Number of pages5
ISBN (Electronic)9781119082446
StatePublished - 2015
Externally publishedYes
EventLight Metals 2015 - TMS 2015 Annual Meeting and Exhibition - Orlando, United States
Duration: Mar 15 2015Mar 19 2015

Publication series

NameTMS Light Metals
Volume2015-January
ISSN (Print)0147-0809

Conference

ConferenceLight Metals 2015 - TMS 2015 Annual Meeting and Exhibition
CountryUnited States
CityOrlando
Period3/15/153/19/15

Keywords

  • Al-Mg
  • Bimodal alloys
  • Cohesive interface
  • Crystal plasticity

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Metals and Alloys
  • Materials Chemistry

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