Microstructural and Mechanical Behavior Characterization of Ultrasonically Consolidated Titanium-Aluminum Laminates

Abstract

Multilayered hybrid metal laminates have been studied for structural applications due to their potential for higher strength, toughness, and stiffness. The goal of this study was to modify the microstructure and mechanical properties of commercial purity titanium (CP-Ti) and 1100 aluminum (Al) laminates for potential applications in mine blast mitigation. Alternating layers of 50 micron thick CP-Ti and Al layers were ultrasonically consolidated. To provide high hardness and stiffness, the consolidated laminates were heat-treated in a variety of conditions to form intermetallic titanium aluminide (TiAl3) layers. The resulting CPTi/ TiAl3/Al laminates were characterized by scanning electron microscopy. Plate impact testing, an instrumented laboratory scale test to characterize the dynamic spall behavior of the material, was conducted on select laminates. Based on these results, the CP-Ti/TiAl3/Al laminate had a higher spall strength compared to the Cp-Ti/Al laminate.

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Document Details

Document Type
Technical Report
Publication Date
Feb 01, 2009
Accession Number
ADA499565

Entities

People

  • Daniel Casem
  • Dattatraya Dandekar
  • James Catalano
  • Tomoko Sano

Organizations

  • United States Army Research Laboratory

Tags

Communities of Interest

  • Weapons Technologies

DTIC Thesaurus Topics

  • Alloys
  • Aluminum
  • Buildings And Structures
  • Elastic Materials
  • Electron Microscopy
  • Electrons
  • Heat Treatment
  • Intermetallic Compounds
  • Laminates
  • Materials
  • Materials Processing
  • Metals
  • Microscopy
  • Microstructure
  • Military Research
  • Scanning Electron Microscopy
  • Titanium

Fields of Study

  • Materials science

Readers

  • Explosive Engineering.
  • Powder metallurgy of Titanium alloys.
  • Structural Health Monitoring of Composite Structures.

Technology Areas

  • Microelectronics