Accession Number:

ADA252177

Title:

The Effect of Thermomechanical Processing Parameters on the Ambient Behavior of 10% Volume 6061 AL-Alumina

Descriptive Note:

Master's thesis

Corporate Author:

NAVAL POSTGRADUATE SCHOOL MONTEREY CA

Personal Author(s):

Report Date:

1992-03-01

Pagination or Media Count:

88.0

Abstract:

Thermomechanical Processing was conducted on a 10 vol. pct. 6061 Alumina particle reinforced metal matrix composite MMC. The TMP employed consisted of isothermal rolling with intermediate annealing, using a schedule of reduction with constrain strain per pass. The as-processed material exhibited high strength while simultaneously achieving ductility comparable to that of the unreinforced 6061 matrix alloy. In the fully annealed condition, the composites strength and ductility were essentially equal to those of the unreinforced aluminum. An aging study showed accelerated aging and greater peak strength for the composite. Finally, a process and heat treatment combination was established in an attempt to optimize simultaneously the strength and ductility of the composite. It was found that the composite could be aged to a peak strength of 340 MPA while retaining a ductility of 14 percent elongation to failure.

Subject Categories:

  • Laminates and Composite Materials

Distribution Statement:

APPROVED FOR PUBLIC RELEASE