Strength and failure of ultrafine grain and bimodal Al-Mg alloy at high temperatures

Andrew Magee, Leila Ladani

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

Abstract

Uniaxial tensile tests are conducted at room and high temperatures on a bimodal grain size Al-Mg alloy with an ultrafine grain matrix as the major constituent to evaluate the strength and failure mode of the material. The coarse grain ratio and anisotropy effects are also investigated as parameters that could influence the mechanical behavior. It was found that the strength of the material decreases rapidly with temperature such that at 473 K, it was somewhat weaker than a comparable conventional alloy. Dynamic recovery was observed and found to be dependent on coarse grain ratio. Strength anisotropy was found to be reduced with increasing temperature. No evidence of thermally or mechanically assisted grain growth were observed.

Original languageEnglish (US)
Title of host publicationLight Metals 2012 - At the TMS 2013 Annual Meeting and Exhibition
PublisherMinerals, Metals and Materials Society
Pages279-282
Number of pages4
EditionLight Metals 2013 - At the TMS 2013 Annual Meeting and Exhibi...
ISBN (Print)9781118605721
DOIs
StatePublished - 2013
Externally publishedYes
EventLight Metals 2012 - TMS 2013 Annual Meeting and Exhibition - San Antonio, TX, United States
Duration: Mar 3 2013Mar 7 2013

Publication series

NameTMS Light Metals
NumberLight Metals 2013 - At the TMS 2013 Annual Meeting and Exhibi...
ISSN (Print)0147-0809

Conference

ConferenceLight Metals 2012 - TMS 2013 Annual Meeting and Exhibition
CountryUnited States
CitySan Antonio, TX
Period3/3/133/7/13

Keywords

  • Al-Mg alloy
  • Bimodal microstructure
  • Mechanical testing
  • Thermal effects

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Metals and Alloys
  • Materials Chemistry

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