Microstructure of severely deformed metals determined by X-ray peak profile analysis

J. Gubicza, N. H. Nam, L. Balogh, R. J. Hellmig, V. V. Stolyarov, Y. Estrin, T. Ungár

Research output: Article

71 Citations (Scopus)

Abstract

Two essentially different metals, fcc copper and hexagonal titanium, were deformed by equal channel angular pressing (ECAP) up to eight passes. The microstructure developed as a result of severe plastic deformation (SPD) was studied by X-ray peak profile analysis. The formation of submicron grain sized structures was studied as a function of the number of ECAP passes. Thermal stability of the microstructure in both copper and titanium was examined by differential scanning calorimetry (DSC). During the isothermal heat-treatment of copper a bi-modal microstructure was formed, as manifested in a special shape of the peak profiles. In titanium, a considerable fraction of dislocations gets annihilated at temperatures well below the exothermic peak in the DSC curve.

Original languageEnglish
Pages (from-to)248-252
Number of pages5
JournalJournal of Alloys and Compounds
Volume378
Issue number1-2
DOIs
Publication statusPublished - szept. 22 2004

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

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