Accession Number:

AD0692490

Title:

THE MICROSTRUCTURAL APPEARANCE OF THE DISCONTINUITY IN MILD STEEL.

Descriptive Note:

Summary rept. Jul 67-May 69,

Corporate Author:

SOUTHAMPTON UNIV (ENGLAND) INST OF SOUND AND VIBRATION RESEARCH

Personal Author(s):

Report Date:

1969-07-01

Pagination or Media Count:

33.0

Abstract:

The report is concerned with the metallographic characteristics of the discontinuity in the SN curve of notched mild steel specimens, the discontinuity being associated with plastic yielding at the notch and a change in crack paths from transgranular cracking below to inter-transgranular cracking above it. Detailed studies of the microstructures associated with plastic deformation in monotonic straining was undertaken to provide an explanation for the changes observed at the discontinuity. Theories are submitted to explain both the change in crack paths and the shift in endurances at the discontinuity. Author

Subject Categories:

  • Properties of Metals and Alloys
  • Solid State Physics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE