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Experimental determination of Poisson’s ratio of a single crystal nickel heat-resistant alloy in the temperature range of 20–1000°C

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Abstract

This work is devoted to the experimental determination of Poisson’s ratio at temperatures of 20–1000°C, which was carried out on cylindrical samples of a single-crystal heat-resistant nickel alloy with crystallographic orientations of (CGOs) [001], [011], and [111]. The modulus of elasticity for the samples of these orientations has also been determined. It has been established that, in samples of heat-resistant nickel singlecrystal alloy with CGO [011], Poisson’s ratio can vary from negative to positive values depending on the azimuthal orientation, i.e., on the crystallographic directions that lie in the plane perpendicular to the longitudinal axis of the sample. To control the azimuthal CGO of cylindrical samples [011], a special metallographic procedure was developed based on the determination of the dendritic structure on the butt ends of these samples using etching. The data on the azimuthal orientation were subsequently used to place a sensor in order to determine the transverse deformation in these directions.

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Authors and Affiliations

  1. All-Russia Research Institute of Aviation Materials (VIAM), Moscow, 105005, Russia

    S. A. Golynets, V. N. Toloraiya, S. N. Nekrasov & K. K. Khvatskii

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  1. S. A. Golynets
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  2. V. N. Toloraiya
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  3. S. N. Nekrasov
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  4. K. K. Khvatskii
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Correspondence to S. A. Golynets.

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Original Russian Text © S.A. Golynets, V.N. Toloraiya, S.N. Nekrasov, K.K. Khvatskii, 2017, published in Fizika Metallov i Metallovedenie, 2017, Vol. 118, No. 9, pp. 967–972.

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Golynets, S.A., Toloraiya, V.N., Nekrasov, S.N. et al. Experimental determination of Poisson’s ratio of a single crystal nickel heat-resistant alloy in the temperature range of 20–1000°C. Phys. Metals Metallogr. 118, 922–927 (2017). https://doi.org/10.1134/S0031918X17070043

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  • DOI: https://doi.org/10.1134/S0031918X17070043

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