Understanding grain growth behavior in a superplastic nickel-based nanocomposite: Influence of mechanical deformation and heat treatment

Kang Cheung Chan, C. L. Wang, L. Liu

Research output: Journal article publicationJournal articleAcademic researchpeer-review

1 Citation (Scopus)

Abstract

In this paper, the grain growth behavior of a SiC particle-reinforced nickel-based nanocomposite was studied at temperatures of 410°C and 450°C and at strain rates ranging from 8.3 × 10-4 s-1 to 5 × 10-2 s-1. A significant grain growth was observed in both the annealed and deformed specimens. It was found that the static grain growth contributed more to the overall grain growth, and the dynamic grain growth was relatively small at high strain rates. The findings suggested that the thermal stability of the composite should be enhanced as its superplasticity and post-formed properties were greatly affected by the grain growth. Based on the observed microstructural changes, the deformation mechanisms of the composite are also discussed in this paper.
Original languageEnglish
Pages (from-to)243-246
Number of pages4
JournalMaterials and Manufacturing Processes
Volume22
Issue number2
DOIs
Publication statusPublished - 1 Feb 2007

Keywords

  • Deformation mechanism
  • Electrodeposition
  • Grain growth
  • Nanocomposite
  • Superlasticity

ASJC Scopus subject areas

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering
  • Industrial and Manufacturing Engineering

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