[1] DaimlerChrysler AG, Stuttgart, Germany
[2] KOPPERN Entwicklungs GmbH, Hattingen, Germany
[3] PEAK Werkstoff GmbH, Velbert, Germany
[4] ZF Friedrichshafen AG, Friedrichshafen, Germany
[5] Univ Karlsruhe TH, Inst Werkstoffkunde 1, Karlsruhe, Germany