Effects of Surface Finish, of Certain Defects, and of Repair of Defects by Welding on Fatigue Strength of 355-T6 Sand-Castings and Effects of Prior Fatigue Stressing on Tensile Properties
Abstract
Tests were made to evaluate the effects of various surface conditions, of certain defects, and of repairs of some of the defects by welding on the fatigue strength of aluminum sand-cast alloys. The surfaces studied included as-cast, machined, grit-blasted, and shot-blasted surfaces. The unsound conditions included different degrees of porosity and other kinds of defects sometimes present in castings which might affect their fatigue strength. Fatigue tests were made of 355-T6 sand-cast plate-type specimens by subjecting them to direct stress and tensile tests. Results showed that the compositions and tensile properties of the castings complied with the A.S.T.M. and the government specifications.
Document Details
- Document Type
- Technical Report
- Publication Date
- Apr 01, 1948
- Accession Number
- ADB807283
Entities
People
- F. M. Howell
- G. W. Stickley
- J. O. Lyst