Hostname: page-component-76fb5796d-skm99 Total loading time: 0 Render date: 2024-04-25T23:35:38.093Z Has data issue: false hasContentIssue false
  • English
  • Français

In Situ High-Energy XRD Study of the Hot-Deformation Behavior of a Novel γ-TiAl Alloy

Published online by Cambridge University Press:  07 December 2012

Andreas Stark ,
Emanuel Schwaighofer ,
Svea Mayer ,
Helmut Clemens ,
Thomas Lippmann ,
Lars Lottermoser ,
Andreas Schreyer  and
Florian Pyczak
Andreas Stark
Affiliation:
Helmholtz-Zentrum Geesthacht, Institute of Materials Research, Max-Planck-Straße 1, D-21502 Geesthacht, Germany
Emanuel Schwaighofer
Affiliation:
Montanuniversität Leoben, Department of Physical Metallurgy and Materials Testing, Franz-Josef-Straße 18, A-8700 Leoben, Austria
Svea Mayer
Affiliation:
Montanuniversität Leoben, Department of Physical Metallurgy and Materials Testing, Franz-Josef-Straße 18, A-8700 Leoben, Austria
Helmut Clemens
Affiliation:
Montanuniversität Leoben, Department of Physical Metallurgy and Materials Testing, Franz-Josef-Straße 18, A-8700 Leoben, Austria
Thomas Lippmann
Affiliation:
Helmholtz-Zentrum Geesthacht, Institute of Materials Research, Max-Planck-Straße 1, D-21502 Geesthacht, Germany
Lars Lottermoser
Affiliation:
Helmholtz-Zentrum Geesthacht, Institute of Materials Research, Max-Planck-Straße 1, D-21502 Geesthacht, Germany
Andreas Schreyer
Affiliation:
Helmholtz-Zentrum Geesthacht, Institute of Materials Research, Max-Planck-Straße 1, D-21502 Geesthacht, Germany
Florian Pyczak
Affiliation:
Helmholtz-Zentrum Geesthacht, Institute of Materials Research, Max-Planck-Straße 1, D-21502 Geesthacht, Germany
Get access

Abstract

The development of suitable hot-forming processes, e.g. forging, is an important step towards the serial production of TiAl parts. Several microstructure parameters change during hot-forming. However, the underlying mechanisms can normally only be inferred from post process metallographic studies.

We used a deformation dilatometer modified for working in the HZG synchrotron beamlines at DESY for hot-deformation experiments. This setup enables the in situ monitoring of the interaction and evolution of microstructure parameters during processing. We observed the evolution of phase fractions, grain size and crystallographic texture during deformation while simultaneously recording the process parameters, like temperature, force and length change.

Here we present the hot compressive deformation behaviour of a Ti-43Al-4Nb-1Mo-0.1B (in at.%) alloy. Several specimens were deformed at three temperatures each with two compression rates. During the experiments the Debye-Scherrer diffraction rings were continuously recorded.

Keywords

texturex-ray diffraction (XRD)forging
Type
Articles
Information
MRS Online Proceedings Library (OPL) , Volume 1516: Symposium JJ – Intermetallic-Based Alloys—Science, Technology and Applications , 2013 , pp. 71 - 76
Copyright
Copyright © Materials Research Society 2012 

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

Appel, F., Paul, J.D.H. and Oehring, M., Gamma Titanium Aluminide Alloys - Science and Technology (Wiley-VCH, Weinheim, Germany, 2011).CrossRefGoogle Scholar
Clemens, H. and Mayer, S., Advanced Engineering Materials in print, DOI: 10.1002/adem.201200231.CrossRefGoogle Scholar
Clemens, H., Wallgram, W., Kremmer, S., Güther, V., Otto, A. and Bartels, A., Advanced Engineering Materials 10, 707–713 (2008).CrossRefGoogle Scholar
Schloffer, M., Iqbal, F., Gabrisch, H., Schwaighofer, E., Schimansky, F.-P., Mayer, S., Stark, A., Lippmann, T., Göken, M., Pyczak, F. and Clemens, H., Intermetallics 22, 231–240 (2012).CrossRefGoogle Scholar
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. and Schreyer, A., Advanced Engineering Materials 13, 658–663 (2011).CrossRefGoogle Scholar
Hammersley, A.P., Svensson, S.O., Hanfland, M., Fitch, A.N. and Häsermann, D., High Pressure Research 14, 235–248 (1996).CrossRefGoogle Scholar
Lutterotti, L., Bortolotti, M., Ischia, G., Lonardelli, I. and Wenk, H.-R., Z. Kristallogr. Suppl. 26, 125–130 (2007).CrossRefGoogle Scholar
Liss, K.-D., Schmoelzer, T., Yan, K., Reid, M., Dippenaar, R. and Clemens, H., Journal of applied physics 106, 113526 (2009).10.1063/1.3266177CrossRefGoogle Scholar
Stark, A., Schimansky, F.-P. and Clemens, H., Solid State Phenomena 160, 301–306 (2010).10.4028/www.scientific.net/SSP.160.301CrossRefGoogle Scholar