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, Vol. 40 (No. 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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