Accession Number:

ADA503103

Title:

Low Delta-K Faceted Crack Growth in Titanium Alloys (Postprint)

Descriptive Note:

Journal article postprint

Corporate Author:

AIR FORCE RESEARCH LAB WRIGHT-PATTERSON AFB OH MATERIALS AND MANUFACTURING DIRECTORATE

Report Date:

2007-12-01

Pagination or Media Count:

8.0

Abstract:

This communication describes the results of spectrum fatigue loading experiments conducted on castHIT Ti-6Al-4V. the purpose of the experiments is to elucidate the nature of the faceted crack growth that occurs at low values of delta-K in titanium alloys and also other alloys. The results clearly show that thousands of load cycles are required for the crack to grow across a single facet. The confusing terminology relating to low delta-K fatigue fracture topography is reviewed and the term low delta-K faceted growth is proposed as a descriptor.

Subject Categories:

  • Properties of Metals and Alloys
  • Test Facilities, Equipment and Methods
  • Atomic and Molecular Physics and Spectroscopy
  • Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE