Accession Number:

AD0256131

Title:

DETERMINATION OF MICROSTRESSES IN PLASTICALLY DEFORMED POLYCRYSTALLINE SOLIDS

Descriptive Note:

Corporate Author:

FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OHIO

Personal Author(s):

Report Date:

1960-11-04

Pagination or Media Count:

1.0

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

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE