Microstructural stability of nanostructured Cu alloys during high-temperature irradiation

Nhon Q. Vo, See W. Chee, Daniel Schwen, Xuan Zhang, Pascal Bellon, Robert S. Averback

Research output: Contribution to journalArticle

Abstract

The stability of model nanostructured Cu90Mo10 and Cu90W10 alloys during irradiation with 1.8 MeV Kr + at very high temperatures was investigated. Significant coarsening occurs only above ∼0.6Tm in Cu90Mo10 and ∼0.8Tm in Cu90W10 (Tm is the melting point of Cu). Below these temperatures, nanoprecipitates nucleate and grow to a saturation diameter of ∼4 nm. These very small nanoprecipitates confer remarkable microstructural stability, with the Cu grain size remaining below 40 nm. Computer simulations help to explain why these nanostructures are so stable.

Original languageEnglish (US)
Pages (from-to)929-932
Number of pages4
JournalScripta Materialia
Volume63
Issue number9
DOIs
StatePublished - Nov 1 2010

Keywords

  • Cu alloys
  • Implantation
  • Nanostructures
  • Thin films

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics

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