Accession Number:

AD0705512

Title:

ELASTIC FATIGUE IN TITANIUM STUDIES BY SCANNING ELECTRON-MICROSCOPY.

Descriptive Note:

Technical rept.,

Corporate Author:

GEORGE WASHINGTON UNIV WASHINGTON D C INST FOR THE STUDY OF FATIGUE FRACTURE AND STRUCTURAL RELIABILITY

Personal Author(s):

Report Date:

1970-04-01

Pagination or Media Count:

20.0

Abstract:

A study by scanning electron-microscopy was made of the fatigue caused by nominally elastic amplitudes in a strain-aging metal titanium where minor impurities only suffice to confer a significant elastic range. These amplitudes produce point-extrusions, which are contrasted with the slip-zone extrusions produced by larger amplitudes starting plastic strain. These point extrusions apparently give rise to microcracks when they form a dense enough distribution. They seem to arise from a finer and more inherent structural fault than the coarse accidental faults to which elastic fatigue has previously been attributed. Author

Subject Categories:

  • Properties of Metals and Alloys

Distribution Statement:

APPROVED FOR PUBLIC RELEASE