Effects of annealing and impurities on tensile properties of electrodeposited nanocrystalline Ni

  • Y. M. Wang
  • , S. Cheng
  • , Q. M. Wei
  • , E. Ma
  • , T. G. Nieh
  • , A. Hamza

Research output: Contribution to journalArticlepeer-review

287 Scopus citations

Abstract

The strength of electrodeposited nanocrystalline Ni increased rather than decreased after annealing for 1 h at temperatures below 150°C, with little change in the grain sizes or detectable impurity segregation. Annealing at 200°C can be utilized to tailor the grain size distribution for improved ductility in combination with good strength. Further annealing at above 250°C, however, induced a transition to brittle behavior due to impurity segregation to grain boundaries concurrent with grain growth.

Original languageEnglish
Pages (from-to)1023-1028
Number of pages6
JournalScripta Materialia
Volume51
Issue number11
DOIs
StatePublished - Nov 2004
Externally publishedYes

Keywords

  • Annealing
  • Grain growth
  • Impurity
  • Mechanical property
  • Nanocrystalline Ni

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