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- Title
Application of X-ray and neutron diffraction to determine lattice parameters and precipitate volume fractions in low misfit nickel base superralloys.
- Authors
Tiley, J.; Srinivasan, R.; Banerjee, R.; Viswanathan, G. B.; Toby, B.; Fraser, H. L.
- Abstract
Synchrotron X-ray diffraction and neutron diffraction techniques are employed to characterise the lattice parameters and volume fraction of γ and γ' phases in a high strength nickel base superalloy. Samples of Rene88DT were solutionised at 1150°C and cooled under three different rates to provide fine and coarse γ' size distributions. Samples were aged at 760°C to precipitate tertiary γ and coarsen secondary precipitates. Lattice parameter misfit and coefficient of thermal expansion parameters were also determined. Results indicate significant microstructure changes within the samples during the initial 25 h of aging.
- Subjects
SYNCHROTRONS; X-rays; OPTICAL diffraction; NEUTRON diffraction; KIRKENDALL effect; HEAT resistant alloys; NICKEL
- Publication
Materials Science & Technology, 2009, Vol 25, Issue 11, p1369
- ISSN
0267-0836
- Publication type
Article
- DOI
10.1179/174328409X399010