THE EFFECT OF PRIOR-AUSTENITE GRAIN-SIZE ON THE STRESS-CORROSION CRACKING SUSCEPTIBILITY OF A.I.S.I. 4340 STEEL.

Abstract

Using both conventional heat-treatments and repeated rapid austenitising and quenching heat-treatments, a series of AISI 4340 steels with prior-austenite grain-sizes covering the range ASTM 7-12 were developed. The stress-corrosion cracking susceptibility of the steels in a 3.5% aqueous solution of NaCl was investigated using fatigue-precracked, plane-strain cantilever-beam specimens. The results of an electron fractographic investigation of the stress-corrosion fracture surfaces are described; the experimental results are interpreted in terms of a hydrogen-embrittlement mechanism of slow crack growth. (Author)

Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1969
Accession Number
AD0682219

Entities

People

  • H. W. Paxton
  • R. P. M. Procter

Organizations

  • Carnegie Mellon University

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Aqueous Solutions
  • Austenite
  • Cantilever Beams
  • Corrosion
  • Embrittlement
  • Grain Size
  • Heat Treatment
  • Hydrogen Embrittlement
  • Steel
  • Stress Corrosion
  • Stress Corrosion Cracking

Fields of Study

  • Materials science

Readers

  • Materials Science (Mechanical Engineering).
  • Materials Science and Engineering.

Technology Areas

  • Microelectronics