Mesoscale structure and segregation in electrodeposited nanocrystalline alloys

Shiyun Ruan, Christopher A. Schuh*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

52 Scopus citations

Abstract

This paper discusses the relatively unexplored issue of micron-scale structural elements that exist in nanocrystalline materials produced by electrodeposition. For the Ni-W system, we investigate grain "colonies" that are orders of magnitude larger than the nanoscale grain size, and which influence crack propagation and electrochemical corrosion. Auger electron spectroscopy provides evidence for segregation of W to the intercolony boundaries at the supermicron scale. We also point out that the physical and chemical properties of these mesostructures are affected by, and may thus be manipulated through, the deposition conditions.

Original languageEnglish (US)
Pages (from-to)1218-1221
Number of pages4
JournalScripta Materialia
Volume59
Issue number11
DOIs
StatePublished - Dec 2008

Keywords

  • Electroplating
  • Mechanical properties
  • Mesoscale structures
  • Nanocrystalline materials
  • Segregation

ASJC Scopus subject areas

  • General Materials Science
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys

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