Scandium-enriched nanoprecipitates in aluminum providing enhanced coarsening and creep resistance

Anthony De Luca, David C. Dunand*, David N. Seidman

*Corresponding author for this work

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

8 Scopus citations


The development of high temperature aluminum alloys able to operate up to 400 ºC is crucial to replace steel and titanium and decrease the mass of vehicles in the automotive and aerospace industries. This review relates the past two decades of aluminum alloy engineering done at Northwestern University focusing on developing coherent L12 Al3M nanoprecipitates strengthened aluminum alloys that are coarsening and shear-resistant at high temperature. Starting with the Al-Sc binary system, each new generation of alloys has become more complex to improve the alloy’s mechanical properties and coarsening resistance at high temperatures. The effects of rare-earth (Er, Y, Sm, Gd, Tb, Dy, Ho, Tm, Yb, Lu), transition metals (Zr, Ti, V, Nb, Ta), inoculants (Si, In, Sb, Sr, Ge, Zn) and solid solution (Mg, Li) elements onto the L12 Al3M precipitates is reviewed. The most recent alloys have optimized strength, coarsening resistance and lower prices, opening the doors to wider application uses.

Original languageEnglish (US)
Title of host publicationLight Metals 2018
EditorsOlivier Martin
PublisherSpringer International Publishing
Number of pages6
ISBN (Print)9783319722832
StatePublished - 2018
EventInternational symposium on Light Metals, 2018 - Phoenix, United States
Duration: Mar 11 2018Mar 15 2018

Publication series

NameMinerals, Metals and Materials Series
VolumePart F4
ISSN (Print)2367-1181
ISSN (Electronic)2367-1696


OtherInternational symposium on Light Metals, 2018
Country/TerritoryUnited States


  • Aluminum alloy
  • High-temperature alloy
  • Precipitation strengthening

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Energy Engineering and Power Technology
  • Mechanics of Materials
  • Metals and Alloys
  • Materials Chemistry


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