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Microstructure evolution in Al-Mg alloys during and after hot deformation

  • Raul Perez-Bustamante
  • , Ryann E. Rupp
  • , Andrew J. Weldon
  • , Trevor J. Watt
  • , Ken Takata
  • , Eric M. Taleff

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

Abstract

Controlling the microstructure developed during hot rolling is of great importance to controlling final material properties. Changes in processing parameters and chemical composition alter the recovery-recrystallization-grain-growth processes that control microstructure evolution. To better understand these processes in two Al-Mg alloys, cylindrical specimens were subjected to hot compression at temperatures from 300 to 500°C with a fixed strain rate of 1.0 s-1. Upset specimens were immediately quenched by He gas to preserve their deformed microstructures. Specimen sections were then annealed to separate the dynamic and static components of microstructure evolution. Specimen microstructures were characterized by optical and electron microscopy. Grain size and the degree of recrystallization were measured as functions of specimen chemistry, compression-test conditions and annealing conditions. The experimental results are interpreted to better understand the mechanisms of microstructure evolution and to evaluate new paths to microstructure refinement during hot rolling.

Original languageEnglish
Title of host publicationLight Metals 2015 - At the TMS 2015 Annual Meeting and Exhibition
EditorsMargaret Hyland, Margaret Hyland
PublisherMinerals, Metals and Materials Society
Pages169-172
Number of pages4
ISBN (Electronic)9781119082446
StatePublished - 2015
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
Country/TerritoryUnited States
CityOrlando
Period03/15/1503/19/15

Keywords

  • Aluminum
  • Hot deformation
  • Recrystallization

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