Accession Number:

AD0619467

Title:

STRENFTH AND DEFORMATION CHARACTERISTICS OF BINARY METAL WHISKERS,

Descriptive Note:

Corporate Author:

FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OHIO

Personal Author(s):

Report Date:

1965-07-27

Pagination or Media Count:

19.0

Abstract:

The tensile strength of a large number of Fe, Fe-Cu, Fe-Co, Cu and Cu-Co whiskers with diameters ranging from 20 to 300 microns has been measured at room temperature and at elevated temperatures. The results indicate that the binary metal whiskers of the dispersion type such as Fe-Cu and Cu-Co whiskers have a greater strength than single-component whiskers while the binary whiskers of the solid solution type such as Fe-Co whiskers do not. On the basis of the stress-strain curves and metallographical examination it is suggested that the high strength of the dispersion type Fe-Cu whiskers may be due to the formation of a high strength layer of the dispersive mixture or iron and copper and that their ductility may be due to the presence of the ductile copper cores in these whiskers. The basic processes involved in the thickening of the binary metal whiskers of either the dispersion or the solid solution type and their relation to the strength and deformation characteristics were discussed. It is suggested that the principle and method of growing mixed metal whiskers of the dispersion type may serve as a useful guide in preparing high-strength composite materials with improved ductility. Author

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE