Journal ArticleDOI
Stable and unstable modes in tensile deformation
TLDR
In this paper, an equation of state with the densities of mobile and immobile dislocations as structure parameters is proposed to describe the evolution of dislocation structure and a mathematically simple model is then used to compare the stable and unstable modes of deformation.About:
This article is published in Materials Science and Engineering.The article was published on 1986-01-01. It has received 16 citations till now. The article focuses on the topics: Necking & Deformation (engineering).read more
Citations
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Journal ArticleDOI
Theory of flow localisation due to dynamic strain ageing
TL;DR: In this paper, the localisation of plastic flow due to dynamic strain ageing is evaluated taking into account transient behaviour associated with the time dependence of the solute composition at mobile dislocations.
Journal ArticleDOI
Local strain hardening and nonuniformity of plastic deformation
Y. Estrin,L.P. Kubin +1 more
TL;DR: In this article, the intrinsic stability of plastic deformation on the local scale has been examined with the help of standard methods of nonlinear analysis, such as yield points and the occurrence of necking, slip lines and slip bands also appear to be interpretable in terms of local instability of plastic flow.
Journal ArticleDOI
Strain hardening and transformation mechanism of deformation-induced martensite transformation in metastable austenitic stainless steels
X.F. Fang,W. Dahl +1 more
TL;DR: In this article, a unified model is proposed on the basis of dislocation theory, thermodynamic and experimental observations, which can explain the strain hardening abnormality and give a quantitative relation between the flow stress and martensite transformation.
Book ChapterDOI
Plastic Instabilities and the Deformation of Metals
TL;DR: In this article, the main dislocation mechanisms relevant for plastic instabilities in metals and the patterns involved are reviewed and the possibilities for describing the deformation kinetics on micro- and macroscale by the approaches of viscous glide and of generation rate of dislocations are discussed.
References
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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 unified phenomenological description of work hardening and creep based on one-parameter models
Y. Estrin,H. Mecking +1 more
TL;DR: In this article, a phenomenological treatment of plastic deformation is proposed which makes it possible to describe in a unified way the plastic behavior of a material both under dynamic loading and in creep.
Journal ArticleDOI
Theory of the tensile test
TL;DR: In this paper, the tensile test is re-examined with special attention to the influence of strain rate sensitivity of the flow stress, and explicit formulae are deduced for the measured variables of the test in terms of the phenomenological parameters of the material.
Book ChapterDOI
Dislocations and Plastic Flow in the Diamond Structure
H. Alexander,P. Haasen +1 more
TL;DR: In this article, it is suggested that the high resistance to dislocation motion of D.S. crystals stems from a high Peierls potential, and the effect of this potential on dislocation dynamics is discussed.
Journal ArticleDOI
Plastic stability in tension and compression
TL;DR: In this article, a tensile analysis of Hart is adapted to compressive loading, and indicates that the onset and termination of flow localization occurs earlier and later, respectively, than in rate sensitive materials.