Accession Number:

AD0258633

Title:

ON THE NATURE OF STRAIN HARDENING IN FACE-CENTERED-CUBIC METALS

Descriptive Note:

Corporate Author:

MATERIALS RESEARCH LAB UNIV OF CALIF BERKELEY

Personal Author(s):

• OSBORNE,P.W.
• MITRA,S.K.
• DORN,J.E.

Report Date:

1961-05-04

Pagination or Media Count:

1.0

Abstract:

The low temperature tensile and creep behaviors of single crystals of Cu were evaluated and analyzed in such a manner as to provide an estimate of the separate contributions of short and long range stress fields to strain-hardening. Furthermore, the average force-displacement diagram for thermally activated intersection of two dislocations was established. This diagram plus a knowledge of the variation of dislocation spacing and the long-range back stresses with strain permits an accurate prediction of creep rates. The calculated activation energy for intersection under conditions of a constant strain rate increases linearly with the absolute temperature as required by theory. Author

Descriptors:

• *HARDENING
• *METAL CRYSTALS
• *SINGLE CRYSTALS
• CREEP
• CRYSTAL LATTICES
• CRYSTAL STRUCTURE
• DEFORMATION
• SHEAR STRESSES
• STRESSES
• TENSILE PROPERTIES
• THEORY

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE