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Abstract <p>We report an experimental study of the wear and fracture of ZrN-coated VT6 alloy in its coarse-grained (as-prepared) and ultrafine-grained states during high-rate dynamic erosion by solid corundum particles with an average size of 109, 58, and 23 μm in an air flow at velocities in the range 50–250 m/s and exposure times of 30, 60, and 300 s. The experimental data were used to determine the fraction of viscous fracture, the erosion damage depth, the change in the microstructure of the coated and uncoated alloy near the erosion surface, and also the weight wear and surface roughness. The results demonstrate that, in the case of high-rate erosion, the alloy wear and damage processes depend significantly on the exposure time, erosion rate (velocity of abrasive particles), powder particle size, and substrate structure.</p>

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High-Rate Erosion of VT6 Titanium Alloy with ZrN Protective Coating

  • 期刊论文

  • 发表日期：

    2025年8月1日

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  • S. A. Atroshenko,
  • R. Z. Valiev,
  • N. A. Kazarinov,
  • N. F. Morozov,
  • R. R. Valiev,
  • Ya. N. Savina,
  • M. N. Antonova,
  • A. D. Evstifeev

摘要

Abstract

We report an experimental study of the wear and fracture of ZrN-coated VT6 alloy in its coarse-grained (as-prepared) and ultrafine-grained states during high-rate dynamic erosion by solid corundum particles with an average size of 109, 58, and 23 μm in an air flow at velocities in the range 50–250 m/s and exposure times of 30, 60, and 300 s. The experimental data were used to determine the fraction of viscous fracture, the erosion damage depth, the change in the microstructure of the coated and uncoated alloy near the erosion surface, and also the weight wear and surface roughness. The results demonstrate that, in the case of high-rate erosion, the alloy wear and damage processes depend significantly on the exposure time, erosion rate (velocity of abrasive particles), powder particle size, and substrate structure.