OBSERVATION BY TRANSMISSION ELECTRON MICROSCOPY OF STACKING FAULTS IN A BODY-CENTERED CUBIC METAL: NIOBIUM
Transmission electron microscopy studies were made of niobium sponge melted several times in vacuo and in argon. Foils made from the resulting ingot revealed, in addition to the individual dislocations, networks, and interesting interactions between dislocations, a large number of stacking faults with their associated partial dislocations. Micrographs show some aspects of the stacking- fault ribbons within which the characteristic interference fringes can be seen. These ribbon dislocations cover an extensive area; so it is possible to observe in certain cases the interactions of the individual particles. These are similar to those observed by Whelan on stainless steel and Matthews on evaporated foils of silver, gold, and copper. (B.O.G.)
- Research Organization:
- European Research Assn., S.A., Brussels
- NSA Number:
- NSA-15-006417
- OSTI ID:
- 4107581
- Journal Information:
- J. Inst. Metals, Vol. Vol: 89; Other Information: Orig. Receipt Date: 31-DEC-61
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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