STRUCTURAL STEEL FRACTURES

Abstract

Fracture analysis as a means of indicating structural, quality, and processing differences is discussed. Under certain conditions brittle crystalline fractures will expose the size of the austenite grain existing before the moment of cooling the steel. Martempering of structural alloy steel as a rule produces, after low-temperature tempering (200 degrees), a fibrous fracture which is replaced during tempering at 300 to 350 degrees by a brittle intercrystalline fracture. At higher temperature tempering, if a brittleness of a second kind is not produced, the fracture again becomes fibrous. Other items discussed include heat treatment and processing effects such as phase transformation, and naphthalinic-type and stone-like fractures.

Document Details

Document Type
Technical Report
Publication Date
Nov 03, 1960
Accession Number
AD0256119

Entities

People

  • K.a. Malyshev
  • V.d. Sadovskiy

Organizations

  • National Air and Space Intelligence Center

Tags

DTIC Thesaurus Topics

  • Alloys
  • Austenite
  • Brittleness
  • Heat Energy
  • Heat Treatment
  • Low Temperature
  • Phase Transformations
  • Steel
  • Structural Steel
  • Tempering
  • Transition Temperature

Fields of Study

  • Materials science

Readers

  • Educational Psychology
  • Materials Science (Mechanical Engineering).
  • Metallurgy