White beam synchrotron topography and gamma -ray diffractometry characterization of the crystalline quality of single-grain superalloys: influence of the solidification conditions
- 14 April 1993
- journal article
- Published by IOP Publishing in Journal of Physics D: Applied Physics
- Vol. 26 (4A) , A50-A52
- https://doi.org/10.1088/0022-3727/26/4a/011
Abstract
The industrial success of manufacturing single-grain superalloy turbine blades is linked to a good control of the crystalline quality of the material, which depends strongly on the solidification conditions. Using gamma -ray diffractometry and white beam X-ray topography the authors study the influence of the value of the thermal gradient at the solidification front and of the rate of growth on the mosaic spread of the grain. The different contributions to the mosaic spread of superalloys are pointed out, as well as the relations with dendrite arrangements.Keywords
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