Journal ArticleDOI
The self-stress of dislocations and the shape of extended nodes
Reads0
Chats0
TLDR
In this article, a definition of the self-stress of a dislocation is proposed which is closely related to the more usual notion of a line tension, enabling a numerical calculation to be made of the shape of extended nodes in dislocation networks, and such a calculation leads to revised values of stacking-fault energies of alloys.Abstract:
A definition of the self-stress of a dislocation is proposed which is closely related to the more usual notion of a line tension. The definition enables a numerical calculation to be made of the shape of extended nodes in dislocation networks, and such a calculation leads to revised values of the stacking-fault energies of alloys. It is found that (to within the scatter usual in these measurements) the values of stacking-fault energy deduced by Howie and Swann (1961) must be multiplied by 2·3.read more
Citations
More filters
Journal ArticleDOI
Stacking fault energies of seven commercial austenitic stainless steels
R. E. Schramm,R. P. Reed +1 more
TL;DR: In this paper, the stacking fault energies of seven commercial austenitic Fe-Cr-Ni, Fe-Ni-Mn and Fe-N-Ni alloys were determined by X-ray diffraction line profile analysis.
Journal ArticleDOI
Investigations of dislocation strain fields using weak beams
TL;DR: In this article, a method for determining the position of dislocation lines accurately from dislocation images is reported and applied to the case of measuring the separation of partial dislocations.
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
Anisotropic continuum theory of lattice defects
Journal ArticleDOI
A non-singular continuum theory of dislocations
TL;DR: In this article, a non-singular, self-consistent framework for computing the stress field and the total elastic energy of a general dislocation microstructure was developed, in which the driving force defined as the negative derivative of the total energy with respect to the dislocation position, is equal to the force produced by stress, through the Peach-Koehler formula.
References
More filters
Journal ArticleDOI
The Determination of the Elastic Field of an Ellipsoidal Inclusion, and Related Problems
TL;DR: In this paper, it is shown that to answer several questions of physical or engineering interest, it is necessary to know only the relatively simple elastic field inside the ellipsoid.
Journal ArticleDOI
The Growth of Crystals and the Equilibrium Structure of their Surfaces
TL;DR: In this paper, it was shown that the rate of growth of a surface containing dislocations is proportional to the square of the supersaturation for low values and to the first power for high values of the latter.
Journal ArticleDOI
Physics of Powder Metallurgy
TL;DR: Sylvania Electric Products, Inc. as discussed by the authors recently sponsored a symposium on the physics of powder metallurgy at Fort Totten in Bayside, Long Island.
Journal ArticleDOI
Direct measurements of stacking-fault energies from observations of dislocation nodes
A. Howie,P. R. Swann +1 more
TL;DR: In this paper, the stacking-fault energies for a number of base aluminium and zinc solid solution alloys were determined from measurements of the radius of curvature of extended dislocation nodes observed by transmission electron microscopy.