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

Abstract

The air of the present project is to obtain a set of bulk billets 100 mm long with UFG structure made of refractory metals such as tungsten and tantalum. The previous positive experience of refining the tungsten's structure using equal channel angular pressing (ECAP) was taken into account. For the production of bulk billets with UFG structure having a more long-lengthed size than those obtained in earlier works, it has been necessary to introduce modifications into the die-set being used and to carry out updating of the whole die-set for ECAP. That is why the main objective of the first stage was to find a new approach to the modernization of pressing process, to design and manufacture a new die set and to test its work, using relatively long billets made of hard-to-deform refractory metals.

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Dec 11, 2002
Accession Number
ADA411681

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
  • Alloys
  • Elements
  • Extrusion
  • Fabrication
  • Grain Size
  • Heat Resistant Alloys
  • High Temperature
  • Materials
  • Materials Processing
  • Mechanical Properties
  • Metals
  • Microstructure
  • Production
  • Refining
  • Refractory Materials
  • Refractory Metals

Readers

  • Powder metallurgy of Titanium alloys.
  • Systems Analysis and Design

Technology Areas

  • Microelectronics