The Effect of Shot Peening on the Stress-Corrosion Properties of Aluminum Alloy D.T.D. 5054
Abstract
Stress corrosion data have been obtained from shot peened specimens cut in the short transverse direction from an aluminum alloy extrusion to specification D.T.D. 5054. The specimens were prepared for test in three different ways to obtain three different residual macro stress systems, typical of the conditions in which the alloy is used in service; it has been shown that after shot peening, the stress-corrosion properties of each of the three groups of specimens have been improved to a marked extent. X-ray diffraction studies on the specimens have shown that for the particular intensity of employed, the resulting highly stressed compressive layer on the surface is of the order 0.006 in. thick and that all evidence of the pre-peening residual stress on the specimen surface has been obliterated. The residual stress measurements show that the balancing tensile stresses are distributed through the remainder of the section rather than concentrated in peak form immediately below the induced surface compression.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 1968
- Accession Number
- ADA382089
Entities
People
- G. A. Hawkes