Accession Number : AD0769074

Title :   Vacuum Treatment of Prealloyed Aluminum Powders at Moderate Temperatures.

Descriptive Note : Final rept. 1 Jan-31 Jul 73,

Corporate Author : KAISER ALUMINUM AND CHEMICAL CORP PLEASANTON CALIF CENTER FOR TECHNOLOGY

Personal Author(s) : Roberts,S. G.

Report Date : OCT 1973

Pagination or Media Count : 44

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)

Descriptors :   (*ALUMINUM ALLOYS, *POWDER METALLURGY), POWDER ALLOYS, VACUUM APPARATUS, EXTRUSION, DEGASIFICATION, MECHANICAL PROPERTIES, HEAT TREATMENT

Subject Categories : Metallurgy and Metallography
      Fabrication Metallurgy

Distribution Statement : APPROVED FOR PUBLIC RELEASE