Journal ArticleDOI
The density and distribution of dislocations in deformed copper crystals
TLDR
In this article, the density and distribution of dislocations in copper crystals deformed in tension have been studied using etch-pitting techniques, and the dislocation density is found to be roughly proportional to the square of the flow stress.About:
This article is published in Acta Metallurgica.The article was published on 1962-03-01. It has received 219 citations till now. The article focuses on the topics: Partial dislocations & Frank-Read Source.read more
Citations
More filters
Journal ArticleDOI
Kinetics of flow and strain-hardening☆
H. Mecking,U.F. Kocks +1 more
TL;DR: In this paper, a phenomenological model is proposed to incorporate the rate of dynamic recovery into the flow kinetics, which has been successful in matching many experimental data quantitatively, and it has been shown that the proportionality between the flow stress and the square root of the dislocation density holds, to a good approximation, over the entire regime; mild deviations arc primarily attributed to differences between the various experimental techniques used.
Journal ArticleDOI
A statistical theory of flow stress and work-hardening
TL;DR: In this article, the authors examined the impact of a random distribution of point-like obstacles to the movement of dislocations and proved that a critical applied stress exists; it is determined by a critical value of the fraction of passable obstacles such that the average dislocation segment can keep moving.
Journal ArticleDOI
The Dislocation Cell IZE AND Dislocation Density in Copper Deformed at Temperatures between 25 and 700 Degrees C.
TL;DR: In this article, a dislocation cell structure was developed in polycrystalline OFHC copper by deforming tensile specimens 10 per cent, one at each of the following temperatures: 25, 250, 400, 500, 550, 600, 650 and 700°C.
Journal ArticleDOI
Yield Points and Delay Times in Single Crystals
TL;DR: In this article, the authors obtained stress-strain curves and transient creep curves for single crystals from calculations based on the observed behavior of dislocations in LiF, and the strain rate equation, e=bnv.
References
More filters
Journal ArticleDOI
The dislocation distribution, flow stress, and stored energy in cold-worked polycrystalline silver
J. E. Bailey,P. B. Hirsch +1 more
TL;DR: In this paper, the distribution and densities of dislocations, determined by electron transmission microscopy, flow stress and stored energy measurements (by microcalorimetry) on cold-worked polycrystalline silver are correlated with each other.
Journal ArticleDOI
Thermally activated glide in face-centred cubic metals and its application to the theory of strain hardening
TL;DR: In this article, the influence of temperature and strain rate on the flow stress of polycrystalline aluminium, and single crystals of aluminium, copper and silver was studied, and the results indicated that the reversible change of flow stress (after correction for variation in elastic modulus in experiments involving temperature change) results from the thermally activated surmounting of barriers by glide dislocations.
Journal ArticleDOI
Dislocation energies in anisotropic crystals
TL;DR: In this article, a detailed calculation of the elastic energy of a straight dislocation in a cubic or hexagonal crystal, for various orientations in the crystal of the dislocation line and its Burgers vector, is made.
Related Papers (5)
The dislocation distribution, flow stress, and stored energy in cold-worked polycrystalline silver
J. E. Bailey,P. B. Hirsch +1 more