Fabrication of High-Strength Lightweight Metals for Armor and Structural Applications

Abstract

A new conceptual design of ECAE die for plate billets was developed and tested. The die provides semi-continuous processing "pass-by-pass" without reshaping and preheating, satisfies conditions of industrial operation, and presents potential to scale up ECAE for bulk plates and sheets. The new processing technology "ECAE + warm rolling" was demonstrated for aluminum armor alloy AA 5083. High strength armor plates (YS = 397 MPa, UTS = 446 MPa, EL = 10%) were delivered to the Army Research Office for ballistic testing. ECAE rolled products were also tested for superplastic forming, precision bulk forging and sheet metal forming. Superior technical characteristics were obtained in all cases. Material degradation during Friction Steer Welding confirmed necessity for fabrication of full scale armor plates.

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Document Details

Document Type
Technical Report
Publication Date
Apr 05, 2012
Accession Number
ADA560251

Entities

People

  • Vladimir M. Segal

Tags

DTIC Thesaurus Topics

  • Abstracts
  • Armor
  • Armor Plate
  • Continuous Processing
  • Degradation
  • Electronic Materials
  • Fabrication
  • Friction
  • Lightweight
  • Material Degradation Processes
  • Materials
  • Metals
  • Military Research
  • Precision
  • Sheet Metal
  • Sheets

Fields of Study

  • Materials science

Readers

  • Archaeological Resource Survey
  • Metallurgy