THE EFFECT OF TEMPERATURE AND STRAIN RATE ON THE YIELD AND FLOW STRESSES IN NIOBIUM,

Abstract

The activation energy, the activation volume, and the frequency factor for the plastic deformation of niobium at low temperatures were determined from the effect of temperature and strain rate on the yield and flow stresses. The present results are in accord with, and give support to, the idea that thermally activated overcoming of the Peierls-Nabarro stress is rate-controlling during the deformation of the BCC metals at low temperatures. (Author)

Document Details

Document Type
Technical Report
Publication Date
Jan 27, 1964
Accession Number
AD0431744

Entities

People

  • G. A. Stone
  • H. Conrad

Organizations

  • The Aerospace Corporation

Tags

DTIC Thesaurus Topics

  • Breakpoint Temperature
  • Energy
  • Frequency
  • Heat Of Activation
  • Low Temperature
  • Plastic Deformation
  • Strain Rate

Fields of Study

  • Physics

Readers

  • Materials Science and Engineering.