Texture and microstructure variation in severe plastic deformed OFHC Cu wires

Peter N. Kalu, Daudi R. Waryoba

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Scopus citations

Abstract

The texture and microstructure resulting from heavily drawn and annealed oxygen-free high conducting (OFHC) copper wires have been investigated using several microscopical techniques including orientation imaging microscopy and nano-indentation. In the as-drawn condition, the microstructure and texture were heterogeneous across the wires, and consisted of three distinct concentric regimes: the inner core, the mid section, and the outer region. Whilst the microtexture of the inner core was dominated by a strong <111>+weak< 100> duplex fiber texture, the mid section and the outer region had a comparatively weak fiber texture. Analysis using a Taylor-type viscoplasticity model revealed that the weak texture observed in this material was a direct consequence of shear deformation during drawing. The recrystallization kinetics of the wires upon isothermal annealing at various temperature was influenced by the deformation heterogeneity, and can be accurately described by a modified JMAK-Microhardness model. In this approach, the JMAK model is expressed in terms of microhardness data, from which the parameters of the different restoration kinetics were determined.

Original languageEnglish (US)
Title of host publicationFundamentals of Deformation and Annealing - Proceedings of the International Symposium held to coincide with the retirement of Professor John Humphreys
Pages509-514
Number of pages6
DOIs
StatePublished - Dec 1 2007
EventInternational Symposium on Fundamentals of Deformation and Annealing - Manchester, United Kingdom
Duration: Sep 5 2006Sep 7 2006

Publication series

NameMaterials Science Forum
Volume550
ISSN (Print)0255-5476

Other

OtherInternational Symposium on Fundamentals of Deformation and Annealing
CountryUnited Kingdom
CityManchester
Period9/5/069/7/06

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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