Accession Number:

AD0293445

Title:

DISLOCATION MOBILITY IN ZINC SINGLE CRYSTALS

Descriptive Note:

Corporate Author:

INNSBRUCK UNIV (AUSTRIA)

Personal Author(s):

Report Date:

1962-12-01

Pagination or Media Count:

1.0

Abstract:

Results of a study of disloc tion mobility in ig purity zinc single crystals are presented. Dislocation positions were determined using a special etching technique, and the dislocation den ity and configuration were determined before and aft r static loading and s re pulse loading. Loading at stress levels slightly below he flow str produce local disloc ion r arra gem nt, with the maximum dislocation displ ce nt somew at less than the sub-boundary spacing. At the flow stres disloc tions penetrate the sub-boundaries and relatively large disloc tion displacements ar i dicated comparable to the specimen dimensions in stress pulse tes s of ppro imately 30 sec duration. Short duration stress pulse loading at a stres lev l approximately 70 times the flow stress produced a maximum dislocation veloci y of approxim ely 6 per cent of the shear wave velocity. Author

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE