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The nucleation and solidification of Al-Ti alloys

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Abstract

A series of hyperperitectic Al-Ti alloys at 0.35, 0.5, 0.7 and 0.8 wt pct Ti has been frozen at rates varying from less than 1°C/s to in excess of 100°C/s. Cooling-curve analyses, metallographic and microprobe examinations, taken altogether, allow identification both of the nucleants and the solidification modes acting in this important alloy system. Two sets of conclusions are drawn, one in general about low concentration peritectic systems like Al-Ti, and the other about particular interactions in Al-Ti. For example, it is revealed that AlxTi compounds exist; Al3Ti, AlxTi and Al are nucleated by TiC; and AlxTi and TiC are both nucleants for aluminum.

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Authors and Affiliations

  1. Department of Mechanical Engineering, University of Waterloo, Waterloo, Ontario, Canada

    H. W. Kerr (Associate Professor)

  2. Product Planning and Research, Ford Motor Co., 20,000 Rotunda Dr., 48121, Dearborn, Mich.

    G. F. Bolling

Authors
  1. J. Cissé
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  2. H. W. Kerr
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  3. G. F. Bolling
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Additional information

Formerly of the Ford Scientific Staff, is now Senior Engineer, Société National d’Etude et de Construction de Moteurs d’Aviation, Gennevilliers, France.

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Cissé, J., Kerr, H.W. & Bolling, G.F. The nucleation and solidification of Al-Ti alloys. Metall Trans 5, 633–641 (1974). https://doi.org/10.1007/BF02644659

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  • DOI: https://doi.org/10.1007/BF02644659

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