346 Prakt. Met. Sonderband 38 (2006) 
5. Acknowledgements Ci 
This project is supported by the Austrian Science Fund (FWF Project number P17650- R. 
N02). The authors wish to thank M. Schobel and Prof. H. P. Degischer of the Institute of 
Materials Science and Technology, Vienna University of Technology, for the residual Un 
stress measurements. Vie 
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