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Type Krug, M.E.; Werber, A.; Dunand, D.C.; Seidman, D.N.
  Publication Core-shell nanoscale precipitates in Al-0.06 at.% Sc microalloyed with Tb, Ho, Tm or Lu Volume Journal Article
Pages 2010
  Abstract Acta Materialia  
  Corporate Author Acta Mater.  
Publisher 58  
Editor 1
  Summary Language 134-145 Series Editor Rare earth; Precipitation; Microhardness; Atom-probe field-ion microscopy (AP-FIM); Aluminum alloys; Al-Sc  
Abbreviated Series Title The age-hardening response at 300 C of Al-0.06Sc-0.02RE (at.%, with RE = Tb, Ho, Tm or Lu) is found to be similar to that of binary Al-0.08Sc (at.%), except that a shorter incubation period for hardening is observed, which is associated with nanoscale RE-rich Al-3(RE1-xScx) precipitates. In addition, Al-0.06Sc-0.02Tb (at.%) has a much lower peak microhardness than that of Al-0.08Sc (at.%) due to the small solubility of Tb in alpha-Al(Sc). Peak-age hardening occurs after 24 h. and is associated with a high number density of nanoscale Sc-rich Al-3(Sc1-xREx) precipitates. Analysis by three-dimensional local-electrode atom-probe tomography shows that x increases with increasing atomic number, and that the REs partition to the core of the precipitates. (C) 2009 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
  Series Issue [Krug, Matthew E.; Werber, Alexandra; Dunand, David C.; Seidman, David N.] Northwestern Univ, Evanston, IL 60208 USA, Email: ISSN  
  Expedition Pergamon-Elsevier Science Ltd Notes  
Call Number  
Contribution Id English  
Serial URL ISBN  
1359-6454 ISI:000272405600015 no NU @ m-krug @ 10807
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