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Determination of the Dendrite Coherency Point during Solidification by Means of Thermal Diffusivity Analysis

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Abstract

Dendrite coherency point in an aluminum-silicon-copper casting alloy was determined by analyses of the variation of the thermal diffusivity. The analysis was carried out using the readings of three thermocouples inserted at equal distances in a mould holding the alloy left to solidify. The values obtained by this method are confirmed by metallographic observations on samples left to solidify to the coherency point before plunging them in water.

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Three of the authors (RCZ, JARS, and RC) appreciate the support provided by CONACYT, Mexico, and PAICYT, UANL.

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Authors and Affiliations

  1. Facultad de Ingeniería Mecánica y Eléctrica, Universidad Autónoma de Nuevo León, 66450, San Nicolás de los Garza, Mexico

    Rubén Chávez-Zamarripa (Graduate Student), J. Angélica Ramos-Salas (Graduate Student) & Rafael Colás (Professor)

  2. Nemak, S.A. de C.V, 66000, García, N.L, Mexico

    José Talamantes-Silva (Head of Metals Research) & Salvador Valtierra (Research Manager)

Authors
  1. Rubén Chávez-Zamarripa
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  2. J. Angélica Ramos-Salas
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  3. José Talamantes-Silva
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  4. Salvador Valtierra
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  5. Rafael Colás
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Corresponding author

Correspondence to Rafael Colás.

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Manuscript submitted February 14, 2007.

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Chávez-Zamarripa, R., Ramos-Salas, J., Talamantes-Silva, J. et al. Determination of the Dendrite Coherency Point during Solidification by Means of Thermal Diffusivity Analysis. Metall Mater Trans A 38, 1875–1879 (2007). https://doi.org/10.1007/s11661-007-9212-8

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  • DOI: https://doi.org/10.1007/s11661-007-9212-8

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