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) : Wood,William A.

Report Date : APR 1970

Pagination or Media Count : 20

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)

Descriptors :   (*TITANIUM, FATIGUE(MECHANICS)), MICROSTRUCTURE, ELECTRON MICROSCOPY, ELASTIC PROPERTIES

Subject Categories : Properties of Metals and Alloys

Distribution Statement : APPROVED FOR PUBLIC RELEASE