Abstract Wear behaviors of materials in nuclear power stations are very complex, because they are rarely subject to just pure impact or sliding wear. This study uses a self-made impact-sliding wear test rig to study the influences of impact kinetic energy and sliding velocity on the energy absorption, mechanical response, interface deformation, and damage behavior of nuclear-grade 304 stainless steels (304SS). The results show that an increase in impact velocity causes an increase in absorbed energy, impact force, and friction force, while lowing the friction coefficient. The friction force and friction coefficient increase with an increase in the sliding velocity, whereas no obvious change is seen in impact force and absorbed energy. The dominant wear mechanism in test samples were delamination failure and friction oxidation. Furthermore, numerical study was performed to explain the effect of velocity on the mechanical response of 304SS.

中文翻译：

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不同冲击动能和滑动速度对304SS冲击滑动磨损行为的影响

摘要 核电站材料的磨损行为非常复杂，因为它们很少受到纯粹的冲击或滑动磨损。本研究采用自制的冲击滑动磨损试验台，研究了冲击动能和滑动速度对核级304不锈钢（304SS）的能量吸收、机械响应、界面变形和损伤行为的影响。结果表明，冲击速度的增加导致吸收能量、冲击力和摩擦力的增加，同时降低摩擦系数。摩擦力和摩擦系数随着滑动速度的增加而增加，而冲击力和吸收能量没有明显变化。测试样品的主要磨损机制是分层失效和摩擦氧化。此外，