Partial dislocations associated with NbC precipitation in austenitic stainless steels
- 1 September 1964
- journal article
- research article
- Published by Taylor & Francis in Philosophical Magazine
- Vol. 10 (105) , 361-389
- https://doi.org/10.1080/14786436408224218
Abstract
A systematic electron microscope investigation has been made of the partial dislocations bounding stacking faults in niobium-containing austenitic stainless steels. Observations of contrast for various reflecting conditions are explained on the basis of calculations carried out using the two-beam dynamical theory of Howie and Whelan, and it is concluded that the outer partials are Franks, the inner partials are Shockleys, and the faults are extrinsic. The invisibility criteria given by Howie and Whelan for partials are extended and a mechanism of NbC precipitation causing growth of the faults is proposed.Keywords
This publication has 12 references indexed in Scilit:
- Effects of surface stress relaxation on the electron microscope images of dislocations normal to thin metal foilsPhilosophical Magazine, 1964
- On diffraction contrast from inclusionsPhilosophical Magazine, 1963
- A precision goniometer stage for the electron microscopeJournal of Scientific Instruments, 1963
- Anomalous electron absorption effects in metal foils: theory and comparison with experimentProceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences, 1962
- Diffraction contrast of electron microscope images of crystal lattice defects. III. Results and experimental confirmation of the dynamical theory of dislocation image contrastProceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences, 1962
- Segregation and precipitation in stacking faultsActa Metallurgica, 1962
- Extended jogs in dislocations in face-centred cubic metalsPhilosophical Magazine, 1962
- Diffraction contrast of electron microscope images of crystal lattice defects - II. The development of a dynamical theoryProceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences, 1961
- Pyramidal glide and the formation and climb of dislocation loops in nearly perfect zinc crystalsPhilosophical Magazine, 1960
- A kinematical theory of diffraction contrast of electron transmission microscope images of dislocations and other defectsPhilosophical Transactions of the Royal Society of London. Series A, Mathematical and Physical Sciences, 1960