RESEARCH AND DEVELOPMENT ON HIGH-PRESSURE-HIGH-TEMPERATURE METALLURGY

Abstract

The experimental investigations on the effect of high hydrostatic pressure on phase transformations in various substitutional Fe base alloys, including Fe-Cr, Fe-Ni and Fe-Sc, yield data which are in close agreement with theoretical prediction. A study of the effects of pressure on Fe-C alloys shows a general shift of the equilibrium phase boundaries to lower C contents and temperatures with pressure. Pressure also acts to retard both the rate of tempering and the isothermal transformation of metastable austenite. The synthesis of fcc MoC was carried out at pressures in excess of 35 kilobars at a temperature of 2000 C. The thermally activated recovery and recrystallization processes were retarded in a study of Cu and 70-30 brass. (Author)

Document Details

Document Type
Technical Report
Publication Date
Aug 01, 1961
Accession Number
AD0271580

Entities

People

  • L. Kaufman
  • S.v. Radcliffe

Tags

DTIC Thesaurus Topics

  • Agreements
  • Alloys
  • Austenite
  • Boundaries
  • Chemistry
  • Critical Temperature
  • Glass Transition Temperature
  • High Pressure
  • High Temperature
  • Hydrostatic Pressure
  • Materials Science
  • Metallurgy
  • Phase Transformations
  • Physics
  • Recrystallization
  • Transition Temperature

Readers

  • Materials Science and Engineering.
  • Powder metallurgy of Titanium alloys.