Bulk Nanostructured Refractory Metals with Enhanced Mechanical Properties Produced by Equal Channel Angular Pressing

Abstract

The main aim of the current project has been to produce a batch of bulk billets with ultrafine-grained (UFG) microstructure and enhanced strength made of two refractory metals such as tungsten and tantalum. To process bulk W billets with UFG structure having a long-length size more than 100 mm we have developed and successfully used a new approach based on a combination of equal angular pressing (ECAP) and further extrusion. In frames of this project we could also fabricate UFG Ta with strength increased more than 3 times.

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Document Details

Document Type
Technical Report
Publication Date
Mar 01, 2003
Accession Number
ADA525934

Entities

People

  • I.v. Alexandrov
  • R.z. Valiev

Organizations

  • Ufa State Aviation Technical University

Tags

Communities of Interest

  • Advanced Electronics

DTIC Thesaurus Topics

  • Advanced Materials
  • Boundaries
  • Extrusion
  • Grain Size
  • Materials
  • Materials Processing
  • Measurement
  • Mechanical Properties
  • Mechanical Working
  • Metallurgy
  • Metals
  • Microstructure
  • Plastic Deformation
  • Powder Metallurgy
  • Refractory Materials
  • Refractory Metals
  • Tensile Strength

Readers

  • Powder metallurgy of Titanium alloys.

Technology Areas

  • Microelectronics