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Dynamic Strength of Heavy 90W—7Ni—3Fe Alloy Produced by Spark Plasma Sintering

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Abstract

The dynamic strength of heavy 90W—7Ni—3Fe alloy (wt %) was studied on two types of specimens: formed from submicron powder by spark plasma sintering (SPS) and from coarse-grained powder with a particle size of ≈20 µm by standard liquid phase sintering (LPS). Mhe study shows that the dynamic strength of the LPS and SPS specimens ranges up to 2750 and 3150 MPa, respectively, and that the SPS projectiles at an impact velocity of 1200 m/s penetrate 60% deeper into a steel target than the LPS projectiles. The difference in the penetration depth results from different penetration mechanisms: piercing for the coarse-grained material and cratering for the fine-grained one.

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Funding

The work was supported by the President of the Russian Federation under grant No. NSh-7179.2016.8 and partially supported by the Ministry of Education and Science of the Russian Federation under state assignment No. 9.6109. 2017/6.7.

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Authors and Affiliations

  1. Research Institute for Mechanics, Lobachevsky State University of Nizhny Novgorod, Nizhny Novgorod, 603950, Russia

    A. M. Bragov, A. R. Filippov & A. Yu. Konstantinov

  2. Research Institute for Physics and Technology, Lobachevsky State University of Nizhny Novgorod, Nizhny Novgorod, 603950, Russia

    V. N. Chuvildeev, N. V. Melekhin & N. V. Sakharov

Authors
  1. A. M. Bragov
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  2. V. N. Chuvildeev
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  3. N. V. Melekhin
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  4. A. R. Filippov
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  5. A. Yu. Konstantinov
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  6. N. V. Sakharov
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Corresponding author

Correspondence to N. V. Melekhin.

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Russian Text © The Author(s), 2018, published in Fizicheskaya Mezomekhanika, 2018, Vol. 21, No. 2, pp. 96–102.

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Bragov, A.M., Chuvildeev, V.N., Melekhin, N.V. et al. Dynamic Strength of Heavy 90W—7Ni—3Fe Alloy Produced by Spark Plasma Sintering. Phys Mesomech 22, 307–312 (2019). https://doi.org/10.1134/S1029959919040064

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  • DOI: https://doi.org/10.1134/S1029959919040064

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