A Critical Evaluation of the Boron Hardenability Effect in Steel

Abstract

The chemistry of boron and the metallurgy of boron in iron and steel are thoroughly reviewed. On the basis of critical evaluation of the existing information, a working hypothesis for the mechanism of the boron hardenability effect is presented. The principal effect of boron is to retard the formation of pro-eutectoid ferrite which forms from austenite by a shear mechanism. This retardation occurs because of the excessively high strain energy peaks associated with boron atoms dissolved in austenite. Nucleation and growth processes are expected only when the system passes from a disordered state to a more highly ordered state.

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Jun 01, 1952
Accession Number
AD0857775

Entities

People

  • Joseph W. Spretnak
  • Rudolph Speiser

Organizations

  • Ohio State University

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Boron Alloys
  • Chemical Analysis
  • Chemical Synthesis
  • Chemistry
  • Climate Change
  • Crystal Structure
  • Cubic Lattices
  • Diffusion Coefficient
  • Grain Size
  • Hardening
  • Iron
  • Mechanical Properties
  • Metallurgy
  • Solid Solutions
  • Surface Tension
  • Transition Metals
  • United States

Fields of Study

  • Materials science

Readers

  • Metallurgy
  • Powder metallurgy of Titanium alloys.