Accession Number:

ADA339080

Title:

Modeling the Mechanical Behavior of Aluminum Laminated Metal Composites During High Temperature Deformation

Descriptive Note:

Final rept. 1 Sep 93-31 Aug 97

Corporate Author:

CALIFORNIA UNIV DAVIS DEPT OF CHEMICALENGINEERING AND MATERIALS SCIENCE

Report Date:

1997-12-29

Pagination or Media Count:

23.0

Abstract:

A constitutive model for deformation of a novel laminated metal composite LMC which is comprised of 21 alternating layers of Al 5182 alloy and Al 6090SiC25p metal matrix composite MMC has been proposed. The LMC as well as the constituent or neat structures have been deformed in uniaxial tension within a broad range of strain rates i.e. 10exp-6 to 10s and moderate to high homologous temperatures i.e. 0.3 0.95 Tm . The LMC structure exhibits a behavior somewhat closer to the MMC layers. The results of these experiments have lead to a thorough characterization of the neat layers mechanical behavior and a subsequent semi-empirical constitutive rate equation for both the Al 5182 and Al 6O9OSiC25p. These predictive relations for the neat layers have been coupled with a proposed model for deformation. This deformation model has led to the development of a constitutive relationship between flow stress and applied strain rate for the laminated structure which has been compared with experimental data.

Subject Categories:

  • Laminates and Composite Materials
  • Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE