THE EFFECT OF LEAD ON MICRO-CRACK INITIATION AND PROPAGATION IN ALLOY STEELS. PART A: EMBRITTLEMENT OF LEADED STEELS AT INTERMEDIATE TEMPERATURES

Abstract

A detailed investigation was made of the influence of 0.30% lead on the room and elevated temperature mechanical properties of a 4145 steel. Leaded and non-leaded versions of this identical steel were quenched and tempered to room temperature strength levels ranging from 120 to 240 ksi. The properties measured included both complete tensile data and impact energies for all strength levels. Macrofractographs detailing differences in fracture morphology at specific test temperatures were also included.

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Document Details

Document Type
Technical Report
Publication Date
Jul 01, 1968
Accession Number
AD0676157

Entities

People

  • Norman N. Breyer
  • Sheldon Mostovy

Organizations

  • Illinois Institute of Technology

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Crack Tips
  • Electron Microscopes
  • Heat Treatment
  • Materials
  • Materials Engineering
  • Measurement
  • Mechanical Properties
  • Mechanical Working
  • Mechanics
  • Melting Point
  • Modulus Of Elasticity
  • Reduction Of Area
  • Tensile Properties
  • Tensile Strength
  • Test And Evaluation
  • Test Equipment
  • Yield Strength

Fields of Study

  • Materials science

Readers

  • Business Analytics
  • Materials Science (Mechanical Engineering).
  • Petroleum Engineering