The Effect of a Thin Diffused Solute Layer on the Nucleation of Fatigue Cracks.
Abstract
The purpose of this study was to investigate methods of controlling the nucleation and growth of fatigue cracks in Ti-6Al-4V Alloy. The technique employed was based on the development of a thin diffused concentration profile of a second element in the surface layers of the specimen. If the deformation characteristics of the thin layer lead to the delay of the development of the start of fatigue cracks, then the lifetime of the alloy can be increased. Moreover, since environmental conditions affect fatigue, the chemical nature of the surface layers might impede crack growth once it is started. The results of the experiments conducted show that specific concentration profiles of solutes improve the fatigue life of the alloy. Most interesting was the fact that dissolved oxygen in a thin layer at the surface is beneficial to the fatigue life of titanium alloy.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 1975
- Accession Number
- ADA005722
Entities
People
- Derle M. Snyder
- I. G. Greenfield
- Mary Swain
Organizations
- University of Delaware