Activity Single crystalline solidification with enhanced microstructure

Internally funded project

Project Details

Project leader:
Prof. Dr.-Ing. Robert Singer

Contributing FAU Organisations:
Lehrstuhl für Werkstoffwissenschaften (Werkstoffkunde und Technologie der Metalle)

Start date: 01/01/1990

Research Fields

High Temperature Materials
Lehrstuhl für Werkstoffwissenschaften (Werkstoffkunde und Technologie der Metalle)

Abstract (technical / expert description):

Based on experience with the LMC (Liquid Metal Cooling) process, it is focused on the investigation of the newly developed FCBC (Fluidized Carbon Bed Cooling) process for the single crystalline solidification of superalloys. In comparison with commercially available investment casting processes it could be shown that FCBC benefits from a higher cooling potential. In combination with a dynamic baffle a higher axial temperature gradient will evolve. Objective is the improvement of the process understanding as well as the process optimization, carried out on a 10 kg prototype plant. A further point of interest is the exploitation of the increased microstructural homogeneity for alloy development.

CRC DFG TR 103 “From Atom to Turbine Blade” (

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Lohmüller, A., Eßer, W., Großmann, J., Hördler, M., Preuhs, J., & Singer, R. (2000). Improved Quality and Economics of Investment Castings by Liquid Metal Cooling Media - The Selection of Cooling Media. In K. Green, T. M. Pollock, R. Kissinger, R.R. Bowman, K.A. Green, M. McLean, S. Olson, J.J. Schirra (Eds.), Superalloys 2000: Proceedings of the 9th Intenational Symposium of Superalloys (pp. 181-188). Seven Springs, US: Warrendale: TMS.
Grossmann, J., Preuhs, J., Eßer, W., & Singer, R. (1999). Investment Casting of High Performance Turbine Blades by Liquid Metal Cooling - A Step Forward Towards Industrial Scale Manufacturing. Santa Fe, US.
Krug, P. (1998). Einfluss einer Flüssigkeitskühlung auf die Mikrostruktur gerichtet erstarrter Superlegierungen (Dissertation).
Fitzgerald, T., & Singer, R. (1997). An analytical model for optimal directional solidification using liquid metal cooling. Metallurgical and Materials Transactions A-Physical Metallurgy and Materials Science, 28(6), 1377-1383.
Fitzgerald, T., & Singer, R. (1995). Modeling of the Directional Solidification of Turbine Blades via Liquid Metal Cooling. In E. Niyama, H. Kodama (Eds.), Conf. Proc., 2nd Pacific Rim Int. Conf. on Modeling of Casting and Solidification (pp. Paper 16). Hitachi, JP.
Singer, R. (1995). Möglichkeiten der Effizienzsteigerung von Gasturbinen durch innovative Werkstofftechnik. VDI-Berichte, 1151, 389-396.
Singer, R. (1994). Advanced Materials and Processes for Land-Based Gas Turbines. In D. Coutsouradis et al. (Eds.), Materials for Advanced Power Engineering (pp. 1707-1729). Liege, BE.
Hugo, F., Mayer, H., & Singer, R. (1994). Directional and Single Crystal Solidification using Liquid Metal Cooling. In Conference Proceedings, 42nd Annual Technical Meeting and Tabletop Exhibition, Investment Casting Institute, Atlanta, Georgia (pp. Paper 9.1). Atlanta, US.

Last updated on 2018-15-10 at 11:53