Journal ArticleDOI
A dispersion strengthening model based on differing elastic moduli applied to the iron-copper system
Kathryn C Russell,Lisa M. Brown +1 more
TLDR
In this article, a model for the interaction between a matrix slip dislocation and a second phase particle of lower shear modulus than the matrix is presented, where the minimum included angle reached by the arms of a dislocation while cutting the precipitate can be calculated as a function of the energy of the dislocation on either side of the precipitates/matrix interface.About:
This article is published in Acta Metallurgica.The article was published on 1972-07-01. It has received 373 citations till now. The article focuses on the topics: Slip (materials science) & Shear modulus.read more
Citations
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An atomic-level model for studying the dynamics of edge dislocations in metals
Yu.N. Osetsky,David Bacon +1 more
TL;DR: In this paper, a model for simulating the dynamic behavior of edge dislocations in metals at the atomic level is presented, which allows the external action (either shear strain or resolved shear stress), crystal energy, plastic displacement and dislocation position and velocity to be determined unambiguously.
Journal ArticleDOI
Threshold stresses for dislocation climb over hard particles: The effect of an attractive interaction
Eduard Arzt,David Wilkinson +1 more
TL;DR: In this paper, the authors present a model for the effect of an attractive interaction between dislocations and hard spherical particles on the process of dislocation bypass by local climb, treating the interaction by assigning a line tension to the dislocation which is lower in the vicinity of the particle than in the matrix.
Journal ArticleDOI
Recent progress in understanding reactor pressure vessel steel embrittlement
G.R. Odette,G.E. Lucas +1 more
TL;DR: In this paper, the basic mechanisms of irradiation embrittlement in reactor pressure vessel steels are reviewed and a detailed identity and etiology of the matrix defects and manganese-nickel-rich phases are discussed.
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Precipitation hardening of superalloys by ordered γ′-particles
Eckhard Nembach,Günter Neite +1 more
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An FIM-atom probe study of the precipitation of copper from lron-1.4 at. pct copper. Part I: Field-ion microscopy
TL;DR: The size and number density of precipitates formed during the early stage of precipitation of copper from Fe-1.4 at 500°C was determined with the field-ion microscope (FIM) as discussed by the authors.
References
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Journal ArticleDOI
The relation between polycrystal deformation and single-crystal deformation
TL;DR: In this paper, a phenomenological description of crystallographic slip and pencil glide in single crystals is outlined, with emphasis on the behavior under prescribed strains Theoretical relations are established between these single-crystal properties and the behavior of quasi-homogeneous, quasi-isotropic polycrystals deforming uniformly on a macroscopic scale, at subdiffusive temperatures.
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Dislocation movement through random arrays of obstacles
A. J. E. Foreman,M. J. Makin +1 more
TL;DR: In this paper, the detailed movement of a dislocation line through a random array of point obstacles in the glide plane has been examined, using a digital computer, on the basis of the line tension approximation.
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Surface effects associated with dislocations in layer crystals
TL;DR: In this paper, it is shown that dislocations will tend to be aligned with surface steps, and the interaction energy between a step and a parallel dislocation line can be derived from experimental data.