TA16钛合金微动磨损特性  

Fretting Wear Behavior of TA16 Alloy Materials

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

机构地区：[1]西南交通大学牵引动力国家重点实验室,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》2011年第4期24-28,共5页Nuclear Power Engineering

基　　金：国家自然科学基金(50625515;51075342);国家重点基础研究发展计划项目(2007CB714704)

摘　　要：采用PLINT微动磨损试验机,进行TA16钛合金传热管与0Cr18Ni9不锈钢实心圆柱体配副件的微动磨损特性试验。试验条件为：常温、法向载荷为50 N和80 N、位移幅值为80~200μm、频率为2 Hz。结果表明,法向载荷和位移幅值对材料损伤程度和损伤机制产生显著影响。材料损伤程度随位移幅值、载荷的增加显著增加,而微动摩擦系数则随之有所降低。由塑性变形层与磨屑层叠加组成的第三体层,对微动磨损过程发挥控制与约束作用。塑变层出现明显的微裂纹和剥层现象;磨屑以钛及其合金的氧化物为主要成分,呈现颗粒状聚集,附着于磨损区域。粘着磨损与磨粒磨损的共同作用,以及磨屑的摩擦氧化、聚集与转移是微动磨损过程的主要特征。The fretting wear behavior tests on cylinder contacts of TA16/0Cr18Ni9 have been carried out under the normal load（50Nand 80N）,frequency（2 Hz） and displacement amplitude（from 80μm to 200μm） using the hydraulic fretting test machine with a high precision.Experimental results showed that the normal loads and displacement amplitudes may have remarkable influence on the damage degree and injury mecha-nism of materials.Degree of injury of material increases with the increasing displacement amplitude and normal loads,however,the friction coefficients decrease.Three-body layer consists of two parts： plastic de-formation layer and debris layer that has effect on the restriction and control in the fretting wear.The analysis found that there are some micro-crack and delamination in the plastic deformation layer,and the abrasive dust have based mainly on the oxide of titanium and titanium alloys,and attached on the surface of wear.Adhesive wear,abrasive wear and friction oxidation are the main fretting wear mechanism.

关 键 词：钛合金 微动磨损 粘着磨损 磨粒磨损 摩擦氧化 

分 类 号：TL329[核科学技术—核技术及应用] TL353.13