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Mechanical properties and corrosion behaviour of freestanding, precipitate-free magnesium WE43 thin films

  • Kristina Schlüter , Christiane Zamponi , Julia Hapke , Norbert Hort , Karl Ulrich Kainer and Eckhard Quandt
Published/Copyright: March 30, 2014
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Abstract

Magnetron sputtered freestanding thin films of two modified WE43 alloys (Mg4Y3Nd and Mg4Y3Gd) consist of a supersaturated single phase microstructure with a strong texture in [0001] direction for a wide range of deposition conditions. While the deposition conditions have no significant influence on the corrosion behaviour of these samples, they strongly influence the mechanical properties, which can be tuned between extremely brittle behaviour for high sputtering pressures (2.0 × 10−2 mbar) and ductile behaviour with a maximum strain of about 18 % at room temperature for low sputtering pressures (8.0 × 10−4 mbar) for both investigated alloys.


* Correspondence address, Prof. Dr.-Ing. Eckhard Quandt, Kaiserstraße 2, 24143 Kiel, Germany. Tel.: +49 (0)431 880 6200, Fax: +49 (0)431 880 6203, E-mail:

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Received: 2012-5-24
Accepted: 2012-8-13
Published Online: 2014-03-30
Published in Print: 2013-03-14

© 2013, Carl Hanser Verlag, München

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