Computer-modelled deformation mechanism maps for hot uniaxially pressed Bi-2223 superconductor

M. P. James, B. A. Glowacki, Anna Tampieri, G. Celotti

Research output: Contribution to journalArticle

2 Scopus citations

Abstract

A deformation mechanism map represents the densification behaviour of a green powder body. A map is created by evaluating the rate-equations for five types of densification mechanisms: yield, boundary diffusion, volume diffusion, power-law creep, and Nabarro Herring creep. These rates are summed where appropriate and integrated to give the density at a given pressure, temperature and time; this can then be plotted on a map. Such maps have been created for hot-pressed Bi-2223, using the HIP 6.0 computer software. Four temperature density deformation maps were created at different pressing pressures and for two types of powder: a solid-state reacted powder and a pyrolysed organic precursor powder. The resulting maps are compared and discussed in relation to a set of experimental results.

Original languageEnglish (US)
Pages (from-to)1409-1414
Number of pages6
JournalJournal of Materials Science
Volume32
Issue number6
DOIs
StatePublished - Jan 1 1997

ASJC Scopus subject areas

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

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