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Measurement of particle-matrix interface strength in TD-Nickel

  • Mechanical Behavior
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Abstract

A technique has been developed for the determination of the particle-matrix interface strength in dispersion-strengthened alloys. The procedure involves very rapid resistance heating, which results in the nucleation of voids by the affect of differential thermal expansion between the metal matrix and the dispersed phase particles. The interface stresses during heating are a function of temperature, and thus determination of minimum temperature at which decohesion occurs permits the estimation of interface strength. This determination was accomplished by tensile testing immediately after heating and the findings supported by transmission electron microscopy of quenched samples. The strength of the Ni−ThO2 interface in a TD-Nickel alloy was found to be approximately 30, 100 psi.

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Author information

Authors and Affiliations

  1. Standard Oil Company of California, Richmond, Calif.

    R. J. Olsen (Materials Engineer)

  2. Rensselaer Polytechnic Institute, Troy, USA

    G. Judd (Assistant Professor, Materials Division) & G. S. Ansell (Chairman, Materials Division and Robert W. Hunt Professor of Materials Engineering)

Authors
  1. R. J. Olsen
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  2. G. Judd
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  3. G. S. Ansell
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Additional information

R. J. OLSEN, formerly at Rensselaer Polytechnic Institute, Troy, N. Y.

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Olsen, R.J., Judd, G. & Ansell, G.S. Measurement of particle-matrix interface strength in TD-Nickel. Metall Trans 2, 1353–1357 (1971). https://doi.org/10.1007/BF02913359

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  • DOI: https://doi.org/10.1007/BF02913359

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