Activity Development of high temperature alloys

Internally funded project

Project Details

Project leader:
Prof. Dr.-Ing. Carolin Körner

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):

We focuse on the development of new alloys for the requirements of industry as well as on clarifying scientific questions. Numerical tools based on CALPHAD (Calculation of Phase Diagrams) calculations as well as further property modeling approaches are used to predict thermomechanical properties of the materials and to optimize them in terms of the desired characteristics. For this purpose the software tool MultOpt was developed. In general, the potential of promising alloys are a compromise between various relevant properties, which are represented in the form of Pareto fronts. The user can decide which alloy is fitting best by weighting up the importance of the conflicting properties. The numerically determined alloy is then cast by an institute own Bridgman furnace. The numerical tool HeatOpt, a coupling of CALPHAD with the phase field method, is used to determine suitable heat treatment parameters, which are applied after alloy manufacturing. Furthermore, the alloys are characterized in terms of their microstructures and mechanical properties. The values determined experimentally are compared with the previously calculated values and an adaptation of the respective numerical modeling is carried out for data with a large discrepancy.

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Volek, A., & Singer, R. (2004). Influence of solidification conditions on TCP phase formation, casting porosity and high temperature mechanical properties in a Re-containing nickel-base superalloy with columnar grain structure. In K. Green, H. Harada, T.E. Howson, T.M. Pollock, R.C. Reed, J.J. Schirra, S. Walston (Eds.), Superalloys 2004: Proceedings of the 10th Intenational Symposium of Superalloys (pp. 713-718). Seven Springs, US: Minerals, Metals and Materials Society.
Volek, A. (2002). Erstarrungsmikrostruktur und Hochtemperatureigenschaften rheniumhaltiger, stängelkristalliner Nickel-Basis-Superlegierungen (Dissertation).
Pyczak, F., Biermann, H., Mughrabi, H., Volek, A., & Singer, R. (2000). CBED-Measurement of Residual Internal Strains in the Neighbourhood of TCP-Phases in Ni-Base Superalloys. 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. 367-376). Seven Springs: TMS.

Last updated on 2019-03-05 at 11:42