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High Energy X-Ray Diffraction Technique for Monitoring Solidification of Single Crystal Castings

Published

Author(s)

D W. Fitting, W P. Dube, Thomas A. Siewert

Abstract

We developed a noninvasive x-ray technique to monitor the solidification of single-crystal castings. X-ray energies in the 150 keV to 320 keV range have sufficient energy for transmission x-ray diffraction to be performed on a 17 mm thick nickel-alloy specimen. We obtained Laue diffraction images from the mold-encased casting even through the x-ray path (over 1m) through a directional solidification furnace included a variety of intervening furnace components. The x-ray method was capable of sensing changes in the physical state of casting (liquid, solid) and measuring the fraction of solid in the region of dendritic solidification.
Proceedings Title
Nondestructive Characterization of Materials, International Symposium | 8th | |
Volume
8
Conference Dates
June 1, 1997
Conference Title
Nondestructive Characterization of Materials

Keywords

casting, dendrites, directional solidification, Laue, modeling, mushy zone, solidificaion sensor, turbine blade, x-ray diffraction

Citation

Fitting, D. , Dube, W. and Siewert, T. (1998), High Energy X-Ray Diffraction Technique for Monitoring Solidification of Single Crystal Castings, Nondestructive Characterization of Materials, International Symposium | 8th | |, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=851224 (Accessed May 26, 2024)

Issues

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Created June 1, 1998, Updated February 17, 2017