ROLE OF COBALT IN THE STRENGTHENING MECHANISMS IN THE AFC-77 STEEL.

Abstract

The hardening behavior of 13% Cr steels with Mo and Co additions is investigated in the temperature range of 400-700 C, by hardness measurements, transmission electron microscopy and electron diffraction, X-ray diffraction, and electron microprobe analysis. The effect of Co and Mo on the hardness after aging is shown. Under conditions approaching equilibrium, the presence of a Sigma type phase is demonstrated, preceded by a fine spherical precipitate uniformly dispersed in the matrix. It is assumed that cobalt is in relation with this precipitation. (Author)

Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1965
Accession Number
AD0479133

Entities

People

  • D. Coutsouradis
  • E. Diderrich
  • J. M. Drapier
  • L. Habraken

Tags

DTIC Thesaurus Topics

  • Chemical Reactions
  • Diffraction
  • Electron Diffraction
  • Electron Microscopy
  • Electrons
  • Hardening
  • Hardness
  • Measurement
  • Microscopy
  • Precipitation
  • Transmission Electron Microscopy
  • X Rays
  • X-Ray Diffraction

Fields of Study

  • Materials science

Readers

  • Calculus or Mathematical Analysis
  • Powder metallurgy of Titanium alloys.

Technology Areas

  • Microelectronics