DETERMINATION OF MICROSTRESSES IN PLASTICALLY DEFORMED POLYCRYSTALLINE SOLIDS
Abstract
A method of harmonic analysis of the intensity distribution curve is used in determining the structural variations which arise during plastic deformation of polycrystalline samples of W and Ta. In order to refine the method for calculating the microdeformations, a relationship is established between the values of the coefficients of expansion into a Fourier series and the magnitude of the angle interval of the blurred (widening) line which has been assumed for the given analysis. It was found that after deformation the blurred lines on microphotographs are governed mainly by microstresses. The obtained microstress values are probably very close to the corresponding yield point values. Microdeformation is homogeneous only in the length intervals ranging from 1.0 to 1.5 x 10 to the -6th cm. The regions in which the microstresses are balanced and have linear dimensions of the same order of magnitude. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Nov 04, 1960
- Accession Number
- AD0256131
Entities
People
- B.ya. Pines
- N.g. Bereznyak
Organizations
- National Air and Space Intelligence Center