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Influence of TiB2 Addition on the Precipitation Kinetics in Al-7Si-0.3Mg In Situ TiB2 Composites

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Abstract

Precipitation behavior of the Al-7Si-0.3Mg/TiB2 in situ composites was investigated using differential scanning calorimetry and transmission electron microscopy, and it was found that Si precipitation is accelerated with increase in TiB2 content. Non-isothermal kinetic analysis clearly showed a decrease in the precipitation kinetics of the overaged metastable precipitates in the Mg2Si precipitation sequence.

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The authors wish to thank Naval Research Board (NRB) for their financial assistance to the project and Mrs. Kanchanamala for her help in TEM.

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  1. S. H. Nandam (Graduate Student)

    Present address: Institute of Nanotechnology, Karlsruhe Institute of Technology, 76344, Eggenstein Leopoldshafen, Germany

Authors and Affiliations

  1. Department of Metallurgical and Materials Engineering, Indian Institute of Technology Madras, Chennai, 600036, India

    S. H. Nandam (Graduate Student), B. S. Murty (Professor) & S. Sankaran (Associate Professor)

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  1. S. H. Nandam
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  2. B. S. Murty
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  3. S. Sankaran
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Correspondence to S. H. Nandam.

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Manuscript submitted November 18, 2014.

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Nandam, S.H., Murty, B.S. & Sankaran, S. Influence of TiB2 Addition on the Precipitation Kinetics in Al-7Si-0.3Mg In Situ TiB2 Composites. Metall Mater Trans A 46, 2844–2849 (2015). https://doi.org/10.1007/s11661-015-2927-z

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