EFFECT OF VACUUM ON THE CREEP-RUPTURE PROPERTIES OF SINTERED ALUMINUM AND COMMERCIAL ALUMINUM

Abstract

In an investigation of the effect of environment on creep-rupture properties, it has been found that vacuum increases the life of sintered aluminum and improves the ductility of commercial purity aluminum at 400, 500, and 600 C. Metallographic studies show that the environmental effects can be related to the appearance of porosity in the dispersion-hardened material and grain boundary fissures in the unmodified aluminum. It is concluded that the improvements conferred by the vacuum environment are a result of its control of the hydrogen content of both materials.

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Document Details

Document Type
Technical Report
Publication Date
Jul 01, 1963
Accession Number
AD0414806

Entities

People

  • M. R. Achter
  • P. Shahinian

Organizations

  • United States Naval Research Laboratory

Tags

DTIC Thesaurus Topics

  • Boundaries
  • Creep
  • Dispersions
  • Ductility
  • Government Procurement
  • Grain Boundaries
  • Heat Treatment
  • High Temperature
  • Materials
  • Mechanical Properties
  • Metals
  • Military Research
  • Oxides
  • Plastic Flow
  • Porosity
  • Reduction Of Area
  • Resistance

Fields of Study

  • Materials science

Readers

  • Materials Science (Mechanical Engineering).
  • Powder metallurgy of Titanium alloys.