The effects of macrolocalization of deformation in Al-based composites with Al2O3 inclusions

Ye Ye Deryugin, V. E. Panin, S. Schmauder, E. Soppa

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

Using a television optical TOMSC system, regular features of localization of macroplastic deformation are studied in composite aluminum-based materials with hard inclusions of Al2O3 under tension. Before investigation, the specimens are subjected to cold rolling, tempering for 30 min at 500°C with subsequent cooling in air, and annealing at 550°C during 2 h with subsequent cooling in furnace. It is shown that the tempered and annealed alloys exhibit mobile centers of active macrolocalization long before the formation of a stationary neck preceding material fracture. Physical mesomechanics, relying on the concepts of the leading role of different-scale stress concentrators that relax and develop in a loaded heterogeneous material, is capable of providing a qualitative description of macrolocalization development.

Original languageEnglish
Pages (from-to)295-304
Number of pages10
JournalFatigue and Fracture of Engineering Materials and Structures
Volume26
Issue number4
DOIs
Publication statusPublished - Apr 2003

Keywords

  • Composites
  • Physical mesomechanics
  • Plastic deformation band
  • Strain localization

ASJC Scopus subject areas

  • Mechanical Engineering
  • Materials Science(all)

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