TEMPER BRITTLENESS RELATED TO FAULTING

Abstract

Temper brittleness was induced in a 3140 steel specimen by means of an isothermal heat treatment in a salt bath. Changes in internal structure of ductile and embrittled specimens were studied using a high-precision X-ray diffractometer. The resulting peak shapes showed (1) a slightly better resolution of the alpha doublet by the brittle specimen, (2) a relative peak displacement between similar lines in the ductile and brittle specimens, and (3) an asymmetry in some of the peak shapes. Based on the observed asymmetry of some of the diffraction peak shapes and published results of other workers using the electron microscope, it is suggested that the embrittlement is related to stacking faults in the crystal structure. Comments are also offered as a possible explanation of the transition curve.

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1962
Accession Number
AD0482245

Entities

People

  • Fred L. Wood

Organizations

  • Naval Postgraduate School

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Asymmetry
  • Brittleness
  • Crystal Structure
  • Crystals
  • Diffraction
  • Electron Microscopes
  • Electrons
  • Fourier Analysis
  • Fourier Series
  • Heat Treatment
  • Materials
  • Measurement
  • Microscopes
  • Radiation
  • Transition Temperature
  • Transitions
  • X Rays

Readers

  • Mechanical Engineering/Mechanics of Materials.
  • Metallurgy
  • Spectroscopy.

Technology Areas

  • Microelectronics