Irradiation-induced formation of nanorod precipitates in a dilute Cu-W alloy

Shipeng Shu, Xuan Zhang, John A. Beach, Pascal Bellon, Robert S. Averback

Research output: Contribution to journalArticle

Abstract

Radiation-enhanced precipitation of W has been investigated in dilute Cu-W alloys. While spherical W precipitates are stabilized during irradiation below ∼ 300 °C and above ∼ 600 °C, irradiation at 500 °C results in the formation of nanorods. Furthermore, use of two-step irradiations, first one at 600 °C followed by one at 500 °C, indicates that the morphological transformation is reversible. The stabilization of W nanorods is rationalized using a model introduced by Frost and Russell to explain size stabilization of precipitates formed during irradiation, but extended here to consider precipitate morphology.

Original languageEnglish (US)
Pages (from-to)155-158
Number of pages4
JournalScripta Materialia
Volume115
DOIs
StatePublished - Apr 1 2016

Keywords

  • Ion irradiation
  • Precipitate morphology
  • Radiation-enhanced diffusion
  • Self-organization

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys

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