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Fretting wear mechanisms of Zircaloy-4 and Inconel 600 contact in air

  • Materials & Fracture · Solids & Structures · Dynamics & Control · Production & Design
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Abstract

The fretting wear behavior of the contact between Zircaloy-4 tube and Inconel 600, which are used as the fuel rod cladding and grid, respectively, in PWR nuclear power plants was investigated in air. In this study, number of cycles, slip amplitude and normal load were selected as the main factors of fretting wear. The results indicated that wear increased with load, slip amplitude and number of cycles but was affected mainly by the slip amplitude. SEM micrographs revealed the characteristics of fretting wear features on the surface of the specimens such as stick, partial slip and gross slip which depended on the slip amplitude. It was found that fretting wear was caused by the crack generation along the stick-slip boundaries due to the accumulation of plastic flow at small slip amplitudes and by abrasive wear in the entire contact area at high slip amplitudes.

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Authors and Affiliations

  1. Graduate School, Department of Mechanical Engineering, Kyungpook National University, 702-701, Taegu, Korea

    Tae-Hyung Kim & Seock-Sam Kim

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  1. Tae-Hyung Kim
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  2. Seock-Sam Kim
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Correspondence to Tae-Hyung Kim.

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Kim, TH., Kim, SS. Fretting wear mechanisms of Zircaloy-4 and Inconel 600 contact in air. KSME International Journal 15, 1274–1280 (2001). https://doi.org/10.1007/BF03185668

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  • DOI: https://doi.org/10.1007/BF03185668

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