Accession Number : AD0612881

Title :   HYDROSTATIC PRESSURE INDUCED PLASTIC FLOW IN POLYCRYSTALLINE METALS.

Descriptive Note : Technical rept.,

Corporate Author : WATERVLIET ARSENAL N Y

Personal Author(s) : Davidson,T. E. ; Uy,J. C. ; Lee,A. P.

Report Date : DEC 1964

Pagination or Media Count : 17

Abstract : The effects of hydrostatic pressures to 26 kbars on the microstructure of polycrystalline Cd, Zn, Bi, Sn, Zr, Mg, Cu, and Fe were examined. Pressure induced microscopic plastic flow in the form of boundary migration, slip, multiple slip or twinning have been observed either singly or in combination in Cd, Zn, Bi and Sn. No deformation was observed in Zr, Mg, Cu, and Fe. The occurrence of such deformation, in terms of its intensity and initiation pressure, relates directly to the degree of anisotropy in the linear compressibility. Pressure cycling does not significantly affect the residual tensile properties of a Zn alloy which exhibits pressure-induced deformation similar to that of pure Zn. (Author)

Descriptors :   (*METALS, DEFORMATION), (*DEFORMATION, METALS), (*HYDROSTATIC PRESSURE, DEFORMATION), CADMIUM, ZINC, BISMUTH, TIN, ZIRCONIUM, MAGNESIUM, COPPER, IRON, MICROSTRUCTURE, ANISOTROPY, COMPRESSIVE PROPERTIES

Distribution Statement : APPROVED FOR PUBLIC RELEASE