J. Mater. Sci. Technol. ›› 2023, Vol. 158: 43-52.DOI: 10.1016/j.jmst.2023.02.037

• Research article • Previous Articles     Next Articles

Fretting wear behavior of Zr alloy cladding tube mated with Zr alloy dimple under mixed fretting regime in simulated primary water of PWR

Yusheng Zhanga,b, Hongliang Minga,b,*, Jiang Laic, Lixia Gaoc, Jianqiu Wanga,*, En-Hou Hana   

  1. aCAS Key Laboratory of Nuclear Materials and Safety Assessment, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China;
    bSchool of Materials Science and Engineering, University of Science and Technology of China, Shenyang 110016, China;
    cNuclear Power Institute of China, Chengdu 610213, China
  • Received:2022-12-27 Revised:2023-02-10 Accepted:2023-02-11 Published:2023-09-20 Online:2023-09-15
  • Contact: *E-mail addresses: hlming12s@imr.ac.cn (H. Ming), wangjianqiu@imr.ac.cn (J. Wang).

Abstract: The fretting wear behavior of Zr alloy cladding tube under mixed fretting regime in a high-temperature pressurized water was investigated. The main wear mechanism is adhesive wear, with characters of small-scale delamination at the center of worn area and serious delamination on the worn edge. A long crack throughout the worn area and other cracks propagated towards the substrate are observed. The cross-sectional microstructure of worn area can be divided into a thick third-body layer, thin inner oxide layer and thick tribologically transformed structure layer, and their formation mechanisms are analyzed in detail. Finally, the mixed fretting regime process and the microstructural evolution during fretting wear are discussed.

Key words: Fretting wear, Mixed fretting regime, Zr alloy tube, High temperature pressurized water, Microstructure