35. THKO-Formed Light Metal Composites with Light-Weight Ceramic Fibers

  1. Dongming Zhu and
  2. Kevin Plucknett
  1. R. Gadow1,
  2. K. V. Niessen1 and
  3. P. Unseld2

Published Online: 26 MAR 2008

DOI: 10.1002/9780470291238.ch35

Advances in Ceramic Coatings and Ceramic-Metal Systems: Ceramic Engineering and Science Proceedings, Volume 26, Number 3

Advances in Ceramic Coatings and Ceramic-Metal Systems: Ceramic Engineering and Science Proceedings, Volume 26, Number 3

How to Cite

Gadow, R., Niessen, K. V. and Unseld, P. (2008) THKO-Formed Light Metal Composites with Light-Weight Ceramic Fibers, in Advances in Ceramic Coatings and Ceramic-Metal Systems: Ceramic Engineering and Science Proceedings, Volume 26, Number 3 (eds D. Zhu and K. Plucknett), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9780470291238.ch35

Author Information

  1. 1

    Institute for Manufacturing Technologies of Ceramic Components and Composites (IFKB), University of Stuttgart, Allmandring 7b, 70569 Stuttgart, Germany

  2. 2

    Institute for Metal Forming Technology (IFU), Holzgartenstraße 17 University of Stuttgart, 70174 Stuttgart, Germany

Publication History

  1. Published Online: 26 MAR 2008
  2. Published Print: 1 JAN 2005

ISBN Information

Print ISBN: 9781574982336

Online ISBN: 9780470291238

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Keywords:

  • geometry;
  • magnesium;
  • aluminum;
  • chemical;
  • hydrostatic

Summary

Excellent mechanical properties in combination with low density are the key features for lightweight structures in automotive and aerospace applications. Light metals are promising candidates to realize safety relevant lightweight components because of their high specific strength and strain to failure values. But for many applications their stiffness and their thermal and fatigue stability is insufficient Tailor-made fiber reinforcements in light metal matrices can solve this problem, but the integration of fibers with conventional manufacturing techniques like squeeze casting or diffusion bonding leads to restrictions in the component's geometry and results in elevated process cost mainly caused by long cycle times and the need of special tools and additional fiber coatings. In collaboration between the Institute for Metal Forming Technology (IFU) and the Institute for Manufacturing Technologies of Ceramic Components and Composites (IFKB) new manufacturing methods for metal matrix composites (MMC) are developed. Prepregs consisting of laminated fiber woven fabrics and metal sheets or thermally sprayed metal coatings on fabrics are used as preforms for an advanced thixoforging process. The semi-solid forming and simultaneous infiltration in short cycle times offer the possibility to realize complex near net-shape geometries and makes additional fiber coating not obligatory.