The Use of Novel Processing Procedures for Improving Overall Fatigue Resistance of High Strength Aluminum Alloys.

Abstract

In Part 1 of this investigation, ductile fracture of 2134 aluminum alloys stabilized by Zirconium has been studied as a function of Mn rich particle content in the under and overaged conditions. As expected in the highest Mn containing alloy voids/sq mm, void growth rate, and void volume fraction were the highest whereas in alloys with 0% and 0.31% Mn these parameters were somewhat similar and lower. Part 2 of this investigation has examined interangular fracture during heat treatment and deformation of an Al-Li-Cu alloy and an Al-Li-Cu-Mg alloy. When the Al-Li-Cu-Mg alloy used in this study is solution treated by rapid heating to 550 C, nonequilibrium eutectic melting of a soluble phase occurs.

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Document Details

Document Type
Technical Report
Publication Date
May 01, 1987
Accession Number
ADA181421

Entities

People

  • Edgar A. Starke Jr.
  • J. A. Wert

Organizations

  • University of Virginia

Tags

Communities of Interest

  • Air Platforms
  • Biomedical
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Aluminum Alloys
  • Chemistry
  • Crystal Structure
  • Electron Microscopy
  • Grain Boundaries
  • Grain Size
  • Heat Treatment
  • Materials
  • Materials Engineering
  • Materials Science
  • Mechanical Properties
  • Mechanical Working
  • Mechanics
  • Surface Roughness
  • Tensile Properties
  • Tensile Strength
  • Tensile Testing

Fields of Study

  • Materials science

Readers

  • Powder metallurgy of Titanium alloys.