Vacuum Treatment of Prealloyed Aluminum Powders at Moderate Temperatures.

Abstract

LLOYS, VACUUM APPARATUS, EXTRUSION, DEGASIFICATION, MECHANICAL PROPERTIES, HEAT TREATMENT*VACUUM HEATING, ALUMINUM ALLOY 1CO 1-1/4CU 2-1/2MG 9ZNThe objective was to determine if treating coarse, highly alloyed aluminum powder (Al-Zn-Mg-Cu plus Co or Zr) at moderate temperatures under relatively high vacuum would yield ductile wrought alloys at strength levels of 100 ksi. Canned, green compacts of -100+325 mesh power were heated at 600F and 700F; evacuated; sealed; hot compacted; decanned and extruded at a 8.5:1 ratio into 1.5-in. diameter rod. Longitudinally the extrusions were strong and ductile. The transverse ductility was poor due to insufficient deformation during extrusion and porosity not eliminated by the vacuum treatment. It is expected that further study of the process variables would yield the techniques required to obtain high transverse strength and ductility. (Modified author abstract)

Document Details

Document Type
Technical Report
Publication Date
Oct 01, 1973
Accession Number
AD0769074

Entities

People

  • S. G. Roberts

Tags

Communities of Interest

  • Materials and Manufacturing Processes

DTIC Thesaurus Topics

  • Alloys
  • Aluminum
  • Aluminum Alloys
  • Ductility
  • Extrusion
  • Heat Treatment
  • High Vacuum
  • Mechanical Properties
  • Transverse
  • Vacuum
  • Vacuum Apparatus

Fields of Study

  • Materials science

Readers

  • Powder metallurgy of Titanium alloys.
  • Thermal Physics or Thermal Science.