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Some features of the rupture of a sintered nickel-chromium alloy containing dispersed oxide inclusions

  • Test Methods and Properties of Materials
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Soviet Powder Metallurgy and Metal Ceramics Aims and scope

Conclusions

  1. 1.

    The addition of dispersed ZrO2 to a sintered 80% Ni-20% Cr alloy reduces its resistance to rupture, mainly by facilitating crack initiation.

  2. 2.

    The crack propagation process, being much more energy-intensive than the crack initiation process, constitutes the critical stage of the rupture of a sintered Ni-Cr alloy containing dispersed zirconia.

  3. 3.

    The presence of fairly evenly distributed ZrO2 particles (up to 4%) does not significantly lower the resistance to crack growth of a sintered Ni-Cr alloy.

  4. 4.

    The tensile mechanical properties of a sintered Ni-Cr alloy (ultimate strength σv and elongation δ) are not uniquely related to its resistance to fracture crack propagation and do not constitute a criterion by which its low-temperature service performance can be judged.

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Literature cited

  1. V. N. Antsiferov, N. N. Khuden'kikh, and V. N. Shubin, in: Dynamics and Strength of Mechanical Systems [in Russian], Perm (1971).

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Authors and Affiliations

  1. Perm Polytechnic Institute, USSR

    V. N. Antsiferov, V. A. Polyakov & V. N. Shubin

Authors
  1. V. N. Antsiferov
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  2. V. A. Polyakov
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  3. V. N. Shubin
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Additional information

Translated from Poroshkovaya Metallurgiya, No. 2(158), pp. 71–75, February, 1976.

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Antsiferov, V.N., Polyakov, V.A. & Shubin, V.N. Some features of the rupture of a sintered nickel-chromium alloy containing dispersed oxide inclusions. Powder Metall Met Ceram 15, 139–142 (1976). https://doi.org/10.1007/BF00793568

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  • DOI: https://doi.org/10.1007/BF00793568

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