锆合金包壳冲-切耦合磨损行为研究

谢宇杰; 王泞; 李正阳; 宁闯明; 郑裕瀚; 蔡振兵

doi:10.7643/ issn.1672-9242.2025.10.014

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装备环境工程 ›› 2025, Vol. 22 ›› Issue (10) : 109-122. DOI: 10.7643/ issn.1672-9242.2025.10.014

重大工程装备

锆合金包壳冲-切耦合磨损行为研究

谢宇杰¹, 王泞¹, 李正阳², 宁闯明¹, 郑裕瀚¹, 蔡振兵^{1, *}

作者信息 +

Impact-Sliding Wear Behavior of Zirconium Alloy Cladding Tube

XIE Yujie¹, WANG Ning¹, LI Zhengyang², NING Chuangming¹, ZHENG Yuhan¹, CAI Zhenbing^{1, *}

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文章历史 +

摘要

目的基于模拟压水堆核电站服役工况,研究切向速度和循环次数对锆合金包壳冲-切耦合磨损行为的影响机理。方法在冲-切耦合磨损设备上,开展锆合金包壳与支撑格架之间的冲-切耦合磨损试验,研究切向速度与循环次数对包壳磨损界面的动力学响应和损伤行为的影响规律。结果当切向速度由50 mm/s增至150 mm/s时,磨损率由1.02×10⁴μm³/J增加至1.256×10⁵μm³/J,切向运动能量耗散占比从72.85%提升至92.03%,其耗散值显著高于冲击过程。当循环次数增加至2.4×10⁶时,磨损率达到1.106×10⁵μm³/J。结论冲-切耦合磨损过程中的能量耗散、磨损体积及其磨损率均与切向速度及循环次数呈正相关。切向运动在材料损伤过程中发挥主导性作用。锆合金燃料包壳的主要磨损机制为剥落、磨粒磨损和氧化磨损。切向速度的增加,加剧了材料的剥落。随着循环次数的增加,包壳表面出现疲劳裂纹的萌生和扩展,磨损机理转变为以疲劳磨损为主。

Abstract

Based on simulating the service conditions of pressurized water reactor (PWR) nuclear power plants, the work aims to investigate the effect mechanisms of tangential velocity and number of cycles on the impact-sliding wear behavior of zirconium alloy cladding. Through the impact-sliding wear testing system, experiments were conducted between zirconium alloy cladding and support grids to investigate the effects of tangential velocity and number of cycles on the dynamic response and damage behavior at the cladding wear interface. As the tangential velocity increased from 50 mm/s to 150 mm/s, the wear rate escalated from 1.02×10⁴ μm³/J to 1.256×10⁵ μm³/J, with tangential motion energy dissipation proportion rising from 72.85% to 92.03%. The energy dissipation through tangential motion significantly exceeded that of impact process. When the number of cycles reached 2.4×10⁶, the wear rate attained 1.106×10⁵ μm³/J. During the impact-sliding wear process, energy dissipation, wear volume, and wear rate all exhibit positive correlations with both tangential velocity and number of cycles. Energy dissipation analysis demonstrates that tangential motion plays a dominant role in the material damage process. The primary wear mechanisms of zirconium alloy cladding include spalling, abrasive wear, and oxidative wear. Increased tangential velocity intensifies material delamination. As the number of cycles accumulates, fatigue cracks initiate and propagate on the cladding surface, shifting the dominant wear mechanism to fatigue-dominated wear.

导出引用

谢宇杰, 王泞, 李正阳, 宁闯明, 郑裕瀚, 蔡振兵. 锆合金包壳冲-切耦合磨损行为研究[J]. 装备环境工程. 2025, 22(10): 109-122 https://doi.org/10.7643/ issn.1672-9242.2025.10.014

XIE Yujie, WANG Ning, LI Zhengyang, NING Chuangming, ZHENG Yuhan, CAI Zhenbing. Impact-Sliding Wear Behavior of Zirconium Alloy Cladding Tube[J]. Equipment Environmental Engineering. 2025, 22(10): 109-122 https://doi.org/10.7643/ issn.1672-9242.2025.10.014

中图分类号： TL34

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