Accession Number : AD0690600

Title :   THE EFFECT OF PLASTIC STRAIN RATE ON DIFFUSION IN ALUMINUM-ZINC ALLOYS,

Corporate Author : MASSACHUSETTS INST OF TECH CAMBRIDGE DEPT OF METALLURGY AND MATERIALS SCIENCE

Personal Author(s) : Bruggeman,G. A. ; Cohen,M. ; Averbach,B. L.

Report Date : APR 1960

Pagination or Media Count : 52

Abstract : The effect of compressive strain-rate on interdiffusion and zinc self-diffusion in aluminum-zinc alloys has been investigated. At a strain rate of 0.0002/sec, the interdiffusion coefficient is increased by factors of 20, 13, and 8 at 375, 415, and 450C respectively. At comparable strain rates, little enhancement of self-diffusion is detected. Quasi-hydrostatic pressure causes the interdiffusion coefficient to decrease much more than predicted theoretically. Factors are suggested which could account for the results, but existing uncertainties preclude a precise interpretation. (Author)

Descriptors :   (*ALUMINUM ALLOYS, DIFFUSION), (*ZINC ALLOYS, DEFORMATION), STRAIN(MECHANICS), PLASTIC PROPERTIES, HEAT TREATMENT, LOADS(FORCES), ELECTRODEPOSITION, PENETRATION, ELASTIC PROPERTIES, STRESSES, TRACER STUDIES

Subject Categories : Metallurgy and Metallography

Distribution Statement : APPROVED FOR PUBLIC RELEASE