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The Effect of TiB2 Content on Wear and Mechanical Behavior of AZ91 Magnesium Matrix Composites Produced by Powder Metallurgy

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Powder Metallurgy and Metal Ceramics Aims and scope

In this research, AZ91 magnesium matrix composites reinforced with three weight fractions (10, 20, and 30 wt.%) of TiB2 particulates were fabricated by powder metallurgy using hot pressing technique. The microstructure, density, hardness, wear, and mechanical properties of the specimens were investigated. Microstructure studies showed that fairly uniform distribution of reinforcements was achieved, but partial agglomeration could be clearly seen at 30 wt.% TiB2. X-ray studies exhibited that phases of Mg, Mg17Al12, and TiB2 were found. As compared to AZ91, the hardness and wear resistance considerably increased with increasing reinforcement content. The presence of TiB2 particles improved 0.2% compressive yield strength and ultimate compressive strength (UCS); however, UCS decreased above 20 wt.% TiB2. Wear mechanisms are oxidative and abrasive.

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Acknowledgments

This work was supported by Karabuk University Coordinatorship of Research Projects (KBU-BAP No. 16/1-DR-077).

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Authors and Affiliations

  1. Karabuk University, Department of Metallurgy and Materials Engineering, Karabuk, Turkey

    Fatih Aydin, Yavuz Sun & M. Emre Turan

Authors
  1. Fatih Aydin
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  2. Yavuz Sun
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  3. M. Emre Turan
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Correspondence to Fatih Aydin.

Additional information

Published in Poroshkova Metallurgiya, Vol. 57, Nos. 9–10 (523), pp. 84–93, 2018.

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Aydin, F., Sun, Y. & Emre Turan, M. The Effect of TiB2 Content on Wear and Mechanical Behavior of AZ91 Magnesium Matrix Composites Produced by Powder Metallurgy. Powder Metall Met Ceram 57, 564–572 (2019). https://doi.org/10.1007/s11106-019-00016-9

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  • DOI: https://doi.org/10.1007/s11106-019-00016-9

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