I-800合金微动磨损特性研究  

Fretting Wear Behavior of Alloy-800 Tube Materials

作　　者：张晓宇[1] 任平弟[1,2] 李长香[3] 蔡振兵[1] 朱旻昊[1] 

机构地区：[1]西南交通大学材料先进技术教育部重点实验室,成都610031 [2]西南交通大学,生命科学与工程学院,成都610031 [3]中国核动力研究设计院,成都610041

出　　处：《核动力工程》2009年第5期67-70,74,共5页Nuclear Power Engineering

基　　金：国家自然科学基金(No50625515);国家重点基础研究发展计划项目(2007CB714704)

摘　　要：使用PLINT微动磨损试验机研究了核电材料1-800合金在常温、法向载荷为50N和80N、位移幅值2-40μm，圆柱交叉接触模式下的切向微动磨损特性。结果表明，在相同载荷下，随位移幅值增加，I-800合金微动运行经历了从部分滑移区向混合区和滑移区的规律性转变。混合区和滑移区的摩擦系数高于部分滑移区。部分滑移区微动磨损轻微，接触区域边缘的微滑区出现微裂纹；滑移区磨损严重，磨痕面积和磨损体积较大；混合区磨屑聚集滞留现象明显。I-800合金的微动磨损机制以摩擦氧化和磨粒磨损为主要特征。Investigation of Alloy-800 under the column-against-column contact with various normal loads of 80 N and 50 N and displacement amplitudes from 2 μm to 40μm in ambient environment is demonstrated in this paper. Experimental results show that the fretting regime of Alloy-800 is transformed from the partial slip regime into the mixed fretting regime and gross slip regime by its fretting behavior with increaseing displacement amplitude under the same normal load. The coefficient of friction in the partial slip regime is lower than that in the mixed fretting regime and gross slip regime .Three different fretting regimes can be observed under fretting condition. In partial slip regime, micro-slipping occurs at the edge of the contact with slight damage and small crack, the wear scar area and fretting wear volume in gross slip regime are large, and in mixed fretting regime, aggregation of debris is obvious. Abrasive wear and friction oxidation are main fretting wear mechanisms of Alloy-800.

关 键 词：核电材料 微动磨损 I-800合金 

分 类 号：TL329[核科学技术—核技术及应用] TL353.13