PROPERTIES OF THE DIAGRAMS OF CYCLIC DEFORMATION AT NORMAL TEMPERATURES,
Abstract
The problem involved in systematic experimental investigation of the properties of diagrams of cyclic elastic-plastic deformation as applied to the kinetics of the stressed state is posed. This study is based on an extensive literature survey. The level of initial deformation (or stresses), the number of leading cycles, the type of loading, the deformation rate, and the state of the material were taken as the main factors. Variations in the proportionality limit and in the unloading modules were also determined. Aluminum alloys V-95, AL-8, and D-16T, low-alloy carbon steels 45 and 30KhGSA, and high-temperature steels 1Kh18N9T and TS were studied in the form of thin-walled tubes. The parameters were recorded with plus or minus 5 percent accuracy. It was found that the materials can be cyclically strengthened, weakened, or stable. In the first half-cycle of loading, the proportionality limit is independent of the degree of initial deformation. Study of these structural materials, which have different mechanical properties, showed that with respect to the number of loading half-cycles with symmetric loading cycle, the diagram of cyclic elasto-plastic deformation formed a generalized diagram of cyclic deformation, providing a unique relationship between stress and deformations. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 19, 1969
- Accession Number
- AD0692358
Entities
People
- A. P. Gusenkov
Organizations
- National Air and Space Intelligence Center