An investigation of the early stages of the precipitation of nitrogen in chromium
- 1 April 1973
- journal article
- research article
- Published by Taylor & Francis in Philosophical Magazine
- Vol. 27 (4) , 785-799
- https://doi.org/10.1080/14786437308227561
Abstract
Multilayered precipitates comprising clusters of nitrogen atoms on cube planes have been observed in chromium which had been heat treated at 1200°C in nitrogen at 10-4 torr, cooled rapidly and aged. By means of measurements on the coherency strain-fields surrounding very small precipitates with diameters of the order of several hundred Angström units the ‘Burgers vector’ associated with a single layer of nitrogen has been determined to be 0.77 Å in 〈100〉. An analysis of the electron microscope displacement fringe contrast observed at larger precipitates confirms the displacement due to a single nitrogen layer obtained by the strain-field measurements.Keywords
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