Local Yielding Attending Fatigue Crack Growth.
Abstract
Fatigue crack growth rate measurements were performed at 100C on an Fe-3Si steel in three thickness conditions and at different Delta K-levels. The test pieces were subsequently sectioned and etched to reveal the plastic deformation attending crack growth both on the surface and in the interior. Unlike preceding studies, the Fe-3Si steel displayed classical cyclic crack growth: well-defined fatigue striations with a spacing close to the per-cycle growth rate, and essentially the same growth rates that have been reported for low and medium strength steels. A highly strained region, about 1/5 the size of the monotonic plastic zone, is identified as the cyclic plastic zone. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Nov 01, 1971
- Accession Number
- AD0737791
Entities
People
- A. R. Rosenfield
- G. T. Hahn
- R. G. Hoagland
Organizations
- Battelle Memorial Institute