Abstract
In-situ high energy X-ray diffraction is a powerful technique to investigate the structure of a material in a dynamic setup. In the present work, the technique was used to study an intermetallic TNM alloy with an increased content of β-stabilising alloying elements Nb and Mo. In a dilatometer setup placed in the synchrotron beam, heating experiments close to thermodynamic equilibrium conditions were performed on homogenised specimens. The experiments offered a deeper insight into the phase transformation behaviour of the investigated type of multi-phase alloy.
Zusammenfassung
In-situ Beugungsexperimente mit hochenergetischer Röntgenstrahlung stellen eine leistungsstarke Technik dar, um den Aufbau eines Materials unter wechselnden Bedingungen zu untersuchen. In der vorliegenden Arbeit wurde diese Methode angewandt, um eine intermetallische TNM Legierung mit erhöhtem Gehalt an β-stabilisierenden Legierungselementen Nb und Mo zu untersuchen. In einem Dilatometeraufbau im Synchrotronstrahlengang wurden Aufheizexperimente nahe dem thermodynamischen Gleichgewicht an homogenisierten Proben durchgeführt. Die Experimente boten einen tieferen Einblick in das Phasenumwandlungsverhalten des untersuchten Multiphasen-Legierungstyps.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Appel, F.; Paul, J. D. H.; Oehring, M.: Gamma titanium aluminide alloys, Weinheim: Wiley-VCH, 2011
Clemens, H.; Mayer, S.: Design, processing, microstructure, properties, and applications of advanced intermetallic TiAl alloys, Advanced Engineering Materials, 15 (2013), pp 191–215
Clemens, H.; Wallgram, W.; Kremmer, S.; Güther, V.; Otto, A.; Bartels, A.: Design of novel β-solidifying TiAl alloys with adjustable b/B2-phase fraction and excellent hot-workability, Advanced Engineering Materials, 10 (2008), pp 707–713
Naka, S.: Advanced titanium-based alloys, Current opinion in solid state & materials science, 1 (1996), pp 333–339
Liss, K.-D.; Bartels, A.; Schreyer, A.; Clemens, H.: High-energy X-rays: A tool for advanced bulk investigations in materials science and physics, Textures and Microstructures, 35 (2003), pp 219–252
Staron, P.; Fischer, T.; Lippmann, T.; Stark, A.; Daneshpour, S.; Schnubel, D.; Uhlmann, E.; Gerstenberger, R.; Camin, B.; Reimers, W.; Eidenberger, E.; Clemens, H.; Huber, N.; Schreyer, A.: In situ experiments with synchrotron high-energy X-rays and neutrons, Advanced Engineering Materials, 13 (2011), pp 658–663
Schmoelzer, T.; Liss, K.-D.; Staron, P.; Mayer, S.; Clemens, H.: The contribution of high-energy X-rays and neutrons to characterization and development of intermetallic titanium aluminides, Advanced Engineering Materials, 13 (2011), pp 685–699
Clemens, H.; Wallgram, W.; Schloffer, M.: U.S. Patent No. US 2011/0277891 A1 2011
Hammersley, A. P.; Svensson, S. O.; Hanfland, M.; Fitch, A. N.; Häusermann, D.: Two-dimensional detector software: from real detector to idealised image or two-theta scan, High Pressure Research, 14 (1996), pp 235–248
Schloffer, M.; Schmoelzer, T.; Mayer, S.; Schwaighofer, E.; Hawranek, G.; Schimansky, F.-P.; Pyczak, F.; Clemens, H.: The characterisation of a powder metallurgically manufactured TNM titanium aluminide alloy using complementary quantitative methods, Praktische Metallographie, 48 (2011), pp 594–604
Erdely, P.; Werner, R.; Schwaighofer, E.; Clemens, H.; Mayer, S.: In-situ study of the time-temperature-transformation behaviour of a multi-phase intermetallic b-stabilised TiAl alloy, Intermetallics, 57 (2015), pp 17–24
Watson, I. J.; Liss, K.-D.; Clemens, H.; Wallgram, W.; Schmoelzer, T.; Hansen, T. C., Reid, M.: In situ characterization of a Nb and Mo containing g-TiAl based alloy using neutron diffraction and high-temperature microscopy. Advanced Engineering Materials, 11 (2009), pp 932–937
Acknowledgements
The presented study was conducted within the framework of the FFG project 830381 “fAusT”, Österreichisches Luftfahrtprogramm TAKE OFF, Austria. In addition, the support of the DESY management and user office is gratefully acknowledged. We appreciate the commitment of the HZG beam-line staff, who contributed greatly to the success of the experiments performed. Research activities performed at DESY have received funding from the European Community’s Seventh Framework Programme (FP7/2007–2013) under grant agreement no. 226716.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Erdely, P., Stark, A., Clemens, H. et al. In-situ High-energy X-ray Diffraction on an Intermetallic β-stabilised γ-TiAl Based Alloy. Berg Huettenmaenn Monatsh 160, 221–225 (2015). https://doi.org/10.1007/s00501-015-0357-2
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s00501-015-0357-2
Keywords
- Intermetallics
- Titanium aluminides based on γ-TiAl
- Phase transformations
- In-situ diffraction experiments