Whisker alignment of Ti-6Al-4V/TiB composites during deformation by transformation superplasticity

C. Schuh, D. C. Dunand*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

65 Scopus citations

Abstract

We examine the effect of 10 vol.% TiB whisker reinforcement on transformation superplasticity of Ti-6Al-4V, induced by thermal cycling about the α/β phase transformation range of the matrix under a uniaxial tensile stress. During superplastic deformation, the whiskers gradually align along the external loading axis, as measured by electron back-scattering diffraction of deformed specimens. The composites exhibit a gradual decrease in effective deformation rate during superplastic elongation. This effect is attributed to increased load transfer from matrix to whisker upon whisker alignment, and is explained with elastic calculations of stress partitioning.

Original languageEnglish (US)
Pages (from-to)317-340
Number of pages24
JournalInternational journal of plasticity
Volume17
Issue number3
DOIs
StatePublished - 2001

Keywords

  • A. Phase transformation
  • Superplasticity
  • Titanium composites

ASJC Scopus subject areas

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

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