EFFECT OF HEAT TREATMENT ON THE DISCONTINUOUS YIELDING OF Al-Cu ALLOYS,

Abstract

The repeated discontinuous yielding of three high-purity aluminum-copper alloys after different annealing treatments was investigated. The study included tensile testing at various strain rates, stress-relaxation experiments, optical and electron microscopy, and microprobe analysis. It was found that whereas the annealing temperature has almost no effect on the structure and tensile properties of the 1% Cu alloy, in the 3% Cu and 4.5% Cu alloys the effect is very marked. The strain-aging-induced negative slope in the flow-stress strain-rate relation, and therefore also discontinuous yielding behavior, are influenced by the heat treatment through the latter's governing the structure of the alloys. (Author)

Document Details

Document Type
Technical Report
Publication Date
May 01, 1970
Accession Number
AD0710317

Entities

People

  • Avraham Rosen

Organizations

  • Technion – Israel Institute of Technology

Tags

DTIC Thesaurus Topics

  • Alloys
  • Annealing
  • Copper Alloys
  • Electron Microscopy
  • Heat Treatment
  • Microscopy
  • Strain Rate
  • Tensile Properties
  • Tensile Testing

Fields of Study

  • Materials science

Readers

  • Materials Science and Engineering.
  • Mechanical Engineering/Mechanics of Materials.
  • Metallurgy

Technology Areas

  • Microelectronics