Metallurgical Transactions A

, Volume 20, Issue 11, pp 2299–2303 | Cite as

The effect of composition on marker movement and kirkendall porosity in ternary alloys

  • Yoon-Ho Son
  • J. E. Morral
Transport Phenomena


A linear model which predicts Kirkendall marker movement in multicomponent diffusion couples has been tested with a series of Ni-Cr-Al γ-phase alloys. The test results followed the model to within experimental scatter, even though the model assumes constant diffusivity in the reaction zone. Comparing the model predictions with previous work suggests that the model can be used in alloy design to eliminate Kirkendall porosity. In addition, preliminary results suggest that the coefficients of the model can be predicted with useful accuracy from fundamental diffusion data.


Diffusion Couple Partial Molar Volume Intrinsic Diffusivity Kirkendall Effect Composition Vector 
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Copyright information

© The Minerals, Metals & Materials Society and ASM International 1989

Authors and Affiliations

  • Yoon-Ho Son
    • 1
  • J. E. Morral
    • 1
  1. 1.Department of metallurgy and Institute of Materials Sciencethe University of ConnecticutStorrs

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