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Determination of Lattice Parameter and Strain of ϒ' Phases in Nickel-Base Superalloys by Synchrotron Radiation Parallel Beam Diffractometry

Published online by Cambridge University Press:  06 March 2019

Katsumi Ohno
Affiliation:
National Research Institute for Metals 2-3-12 Nakameguro, Meguro-ku Tokyo 153, Japan National Laboratory of High Energy Physics 1-1 Oho Tsukuba-shi Ibaragi-ken 305, Japan
Kazumasa Ohsumi
Affiliation:
National Research Institute for Metals 2-3-12 Nakameguro, Meguro-ku Tokyo 153, Japan National Laboratory of High Energy Physics 1-1 Oho Tsukuba-shi Ibaragi-ken 305, Japan
Hiroshi Harada
Affiliation:
National Research Institute for Metals 2-3-12 Nakameguro, Meguro-ku Tokyo 153, Japan National Laboratory of High Energy Physics 1-1 Oho Tsukuba-shi Ibaragi-ken 305, Japan
Toshihiro Yamagata
Affiliation:
National Research Institute for Metals 2-3-12 Nakameguro, Meguro-ku Tokyo 153, Japan National Laboratory of High Energy Physics 1-1 Oho Tsukuba-shi Ibaragi-ken 305, Japan
Michio Tamazaki
Affiliation:
National Research Institute for Metals 2-3-12 Nakameguro, Meguro-ku Tokyo 153, Japan National Laboratory of High Energy Physics 1-1 Oho Tsukuba-shi Ibaragi-ken 305, Japan
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Abstract

The lattice parameters and strain of ϒ'-phase particles in Nickel-base superalloys, which are duplex type alloys designed for turbine blades and widely called “Ni-base single crystal superalloys”; they are accurately determined by Synchrotron Radiation parallel-beam diffractometry. The superalloys have ϒ' precipitates, an ordered FCC structure based on Ni3Al, in a γ-matrix having disordered FCC structure.

In addition, the preparation method of stress-free ϒ'-phase particles, with no composition change in the preparation process, was newly developed to measure the coherency strain of ϒ'-particles due to lattice misfit. The prepared ϒ'-phase particles are similar in composition and form to ϒ'-phase particles in the γ-matrices. The method for determining of the lattice misfit between the γ and γ’ particles was previously reported.

Type
X. Crystallite Size/Strain Analysis
Copyright
Copyright © International Centre for Diffraction Data 1990

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References

1. Harada, H., Ohno, K., Yamagata, T., Yokokawa, T. and Yamazaki, M., Superalloys 88, p. 733, (1988).Google Scholar
2. Ohno, K. and Yamazaki, M., Adv. X-Ray Anal., 30:67, (1987).Google Scholar
3. Ohno, K., Harada, H., Yamagata, T. and Yamazaki, M., Tran. ISIJ, 28:218, (1988).10.2355/isijinternational1966.28.218Google Scholar
4. Ohno, K., Harada, H., Yamagata, T. and Yamazaki, M., Adv. X-Ray Anal., 32:365375, (1989).Google Scholar
5. Ohno, K., Fujiwara, J. and Morimoto, I., X-Ray Spectrom., 9:138142, (1980).Google Scholar
6. Klug, H. P. and Alexander, L. E., “X-Ray Diffraction Procedures for Polyerystalline and Amorphous Meterials,” P.755, (1974), John Wily.Google Scholar