Accession Number:

ADA525934

Title:

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

Descriptive Note:

Final technical rept. 11 Jun-10 Nov 2003

Corporate Author:

UFA STATE AVIATION TECHNICAL UNIV (RUSSIA) INST OF PHYSICS OF ADVANCED MATERIALS

Personal Author(s):

Report Date:

2003-03-01

Pagination or Media Count:

14.0

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.

Subject Categories:

  • Electrical and Electronic Equipment
  • Metallurgy and Metallography
  • Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE