Study of Grain Boundary Segregation Relating to Intergranular Fracture.

Abstract

The results of this program are: The first direct experimental evidence for the phenomena of metastable grain boundary segregation and a model for its relation to the influence of environments on fracture behavior; The influence of grain boundary segregation on the grain boundary fracture of carburized steels; The segregation of As to the transgranular fracture surface of steels and how it related to the lowering of the fracture resistance of these steels; An electrochemical method of charging samples with both hydrogen and hydrogen recombination poisons to subsequently induce grain boundary failure in the Auger electron spectroscopy fracture studies of iron and nickel alloys; The application of X ray photoelectron spectroscopy to determine changes in electronic structure that can be related to the nature of the local bonding in the segregated region of iron intermetallic compounds.

Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1975
Accession Number
ADA006422

Entities

People

  • Harris L. Marcus

Tags

DTIC Thesaurus Topics

  • Alloys
  • Auger Electron Spectroscopy
  • Auger Electrons
  • Boundaries
  • Electron Spectroscopy
  • Electrons
  • Grain Boundaries
  • Hydrogen
  • Intermetallic Compounds
  • Nickel Alloys
  • Photoelectrons
  • Spectroscopy
  • X Ray Photoelectron Spectroscopy
  • X Rays

Fields of Study

  • Materials science

Readers

  • Materials Science and Engineering.
  • Metallurgy
  • Thin Film Deposition Science.

Technology Areas

  • Microelectronics