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

Abstract

The kinetics of recrystallization of polycrystalline Cu (99.999% purity) cold-rolled to 98% reduction were determined by means of an x-ray diffraction technique for the temperature range 80 to 170 C at atmospheric pressure and at 42 kilobars. High pressure is found to retard both the initiation and rate of recrystallization. The effect of high pressure on the Hall voltage of cerium has been determined. A study of the pressure-temperature characteristics of the transformation of the hexagonal phase, MoC(0.67), to the cubic phase, MoC(0.67+x) was completed. The role of C deficiency in the transformation was investigated. The results of a series of experiments designed to investigate pressurequenching in several different Fe-Ni alloys are reported. Thermodynamic data obtained at one atmosphere is used to correlate the high-pressure transitions in thallium and tin. (Author)

Document Details

Document Type
Technical Report
Publication Date
Aug 01, 1962
Accession Number
AD0287200

Entities

People

  • L. Kaufman
  • S.a. Kulin

Tags

DTIC Thesaurus Topics

  • Atmospheres
  • Barometric Pressure
  • Deficiencies
  • Diffraction
  • High Pressure
  • High Temperature
  • Kinetics
  • Metallurgy
  • Polycrystals
  • Recrystallization
  • Thallium
  • Transition Temperature
  • Transitions
  • X Rays
  • X-Ray Diffraction

Readers

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