Microstructure and solidification sequence of the interdendritic region in a third generation single-crystal nickel-base superalloy
Pang, H. T., Dong, H. B., Beanland, R., Stone, H. J., Rae, C. M. F., Midgley, P. A., Brewster, G. and D’Souza, N.. (2009) Microstructure and solidification sequence of the interdendritic region in a third generation single-crystal nickel-base superalloy. Metallurgical and Materials Transactions A, Volume 40 (Number 7). pp. 1660-1669. ISSN 1073-5623Full text not available from this repository.
Official URL: http://dx.doi.org/10.1007/s11661-009-9855-8
An analysis of the microstructure of the interdendritic regions in an as-cast third generation single-crystal nickel-base superalloy CMSX-10K has been carried out using automated serial sectioning with sequential focused ion beam (FIB) milling and image capture of the secondary electron image in a combined FIB–scanning electron microscope (SEM). Two interdendritic morphologies with vastly different γ/γ′ spacing were identified; these are (1) fine γ/γ′ morphology and (2) coarse cellular γ′ separated by narrow γ channels. The FIB results indicate that following primary solidification (L → γ), solidification of the interdendritic region commences in areas that show the fine γ/γ′ morphology, (1) on the γ dendrite lobe. This is followed by a gradual transition to growth of the coarse cellular γ/γ′ channel structure, (2) which occur up to the termination of the solidification process.
|Item Type:||Journal Article|
|Divisions:||Faculty of Science > Physics|
|Journal or Publication Title:||Metallurgical and Materials Transactions A|
|Page Range:||pp. 1660-1669|
|Access rights to Published version:||Restricted or Subscription Access|
|Funder:||Engineering and Physical Sciences Research Council (EPSRC), Royal Society, Rolls-Royce plc.|
|Grant number:||EP/E012477 (EPSRC)|
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