Effect of microstructure on the hot deformation characteristics of aluminium alloys

E. Kovács-Csetényi, N. Q. Chinh, I. Kovács

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

On the basis of results of hot tensile tests made in the range of temperature 623-873 K and strain rate range of 10-4-10-2s-1 on A199.99, AlMgMn and AIMgSi materials, stress exponent of n=4.2, 4.8, and 4.8 and activation energies of 120, 140 and 165 kJ/mol were obtained, respectively. In one case for an AlFeSi alloy n=7 and Q=220 kJ/mol was found. The strain to fracture increases slightly with strain rate and temperature in the alloys. The results are explained by the effect of different intermetallic particles.

Original languageEnglish
Pages (from-to)1175-1180
Number of pages6
JournalMaterials Science Forum
Volume217-222
Issue numberPART 2
Publication statusPublished - Dec 1 1996

Keywords

  • A199.99
  • Activation energy of deformation
  • AlFeSi
  • AlMgMn
  • AlMgSi
  • Hot deformation
  • Intermetallic phase
  • Strain to fracture
  • Stress exponent

ASJC Scopus subject areas

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

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