CONTRIBUTION TO THE QUESTION OF THE MECHANICAL STRENGTH OF FOIL
Abstract
The strength of thin metal foil in tensile tests is distinguished by a number of peculiarities because of the sharp difference in the course of plastic deformation in a thin flat specimen and in a standard cylindrical specimen and the technological methods of manufacturing foil. The plastic limit of the specimens of foil was considerably lower than that of normal cylindrical specimens of the same metal, because of the sharp decrease of the role of concentrated deformation in the total macroscopic elongation of the specimen. The susceptibility to a considerable uniform elongation is a valuable property of metal foil, determining the ultimate deformability of a thin-walled article under overloads. The deformability of foil specimens is characteristic by the possible formation of two superposed zones of concentrated deformation(necks). In the presence of phase transformations during plastic flow of a foil specimen, a substantial additional strain hardening develops. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 04, 1961
- Accession Number
- AD0265672
Entities
People
- P.o. Pashkov
- V.a. Bartukhina
Organizations
- National Air and Space Intelligence Center