Nanostructures and Enhanced Properties in Tungsten and its Alloys Processed by Equal Channel Angular Pressing

Abstract

In this connection, in the frame of the third period of the present project there have been conducted experimental investigations, aimed at equal channel angular pressing (ECAP) optimization of the investigated W and the 90W-8Ni-2Fe alloy. The problem of this task consists in enhancing workability of these hard-to-deform materials and achieving large strains, The influence of the accumulated strain degree the thickness of protection casing, the rate and strain temperatures on grain size and homogeneity of the obtained structure have been investigated as parameters, determining ECAP results. ECAP has been realized on route C, which turns out to be the most effective route for the given case, as it has been found out at first stages of the project.

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Document Details

Document Type
Technical Report
Publication Date
Jan 10, 2002
Accession Number
ADA399187

Entities

People

  • I. V. Alexandrov
  • R. Z. Valiev

Organizations

  • Ufa State Aviation Technical University

Tags

Communities of Interest

  • Advanced Electronics

DTIC Thesaurus Topics

  • Abstracts
  • Advanced Materials
  • Alloys
  • Ductility
  • Grain Size
  • High Temperature
  • Materials
  • Materials Processing
  • Mechanical Properties
  • Microhardness
  • Microstructure
  • Military Research
  • Nanomaterials
  • Nanostructures
  • Protective Coverings
  • Tungsten
  • United States

Fields of Study

  • Materials science

Readers

  • Powder metallurgy of Titanium alloys.
  • Structural Dynamics.

Technology Areas

  • Microelectronics