SLM成形18Ni300摩擦磨损性能研究  

Friction and Wear Characteristics of 18Ni300 Prepared by Selective Laser Melting

作　　者：陈诚 门正兴[1] 马亚鑫 熊计[2] 张宏 王秋林[1] 岳太文[1] 苏艳红[1] Chen Cheng;Men Zhengxing;Ma Yaxin;Xiong Ji;Zhang Hong;Wang Qiulin;Yue Taiwen;Su Yanhong(School of Aeronautical Manufacturing Industry,Chengdu Aeronautic Polytechnic,Chengdu,Sichuan 610021,China;School of Mechanical Engineering,Sichuan University,Chengdu,Sichuan 610065,China;Failure Mechanics and Engineering Disaster Prevention and Mitigation Key Laboratory of Sichuan Province,College of Architecture and Environment,Sichuan University,Chengdu,Sichuan 610065,China)

机构地区：[1]成都航空职业技术学院航空装备制造产业学院,四川成都610021 [2]四川大学机械工程学院,四川成都610065 [3]四川大学建筑与环境学院,破坏力学与工程防灾减灾四川省重点实验室,四川成都610065

出　　处：《应用激光》2022年第8期72-80,共9页Applied Laser

基　　金：国家自然科学基金(51634006);中国博士后基金(2019M653396);四川大学-自贡政府战略合作支持项目(2019CDZG-4);四川大学-宜宾政府战略合作支持项目(2019CDYB-24)。

摘　　要：对激光选区熔化成形18Ni300进行“球-盘”摩擦磨损试验,研究了其在不同摩擦速度和载荷下的摩擦磨损特性。试验过程中记录摩擦因数随试验速度和载荷的变化规律,试验后采用Contour GT-K三维光学轮廓仪分析磨损表面并用于计算不同参数下的体积磨损率,采用HITACHI SU3500扫描电镜对试样基体组织磨损表面进行观察,并对局部进行能谱分析。结果显示,摩擦因数随试验速度提高而升高,随试验载荷增大而降低;18Ni300试样体积磨损率随试验速度和载荷的升高而升高;当试验速度为0.4 m/s时,在15 N和20 N的不同载荷下,其磨损机制均为氧化磨损和磨粒磨损,随着试验速度提高,试样表面塑性变形加剧,以黏着磨损和磨粒磨损为主;当载荷为20 N,试验速度为1.2 m/s时,磨损机制为黏着磨损和轻微氧化磨损。As deposited 18 Ni300 was prepared by selective laser melting,the“ball-on-disk”sliding wear test were performed to study its wear characteristics with different sliding speed and load.Friction factor were recorded during the test,and the wear tracks were analyzed by Contour GT-K 3 D profilometer to calculate the volume wear rate.The microstructure and wear area were analyzed by HITACHI SU3500 SEM,and the chemical composition of partial wear area were analyzed by EDS.The results show that:friction factor increased with the increase of sliding,and decreased with the increase of testing load.The volume wear rate increased with the increase of sliding speed and testing load.When the sliding speed was 0.4 m/s,the wear mechanism were oxidation wear and abrasive wear under the testing load of 15 N and 20 N,the wear mechanism turned to adhesive wear and abrasive wear with the increasing of the sliding speed.The wear mechanism was abrasive wear and oxidation wear under the 1.2 m/s sliding speed and 20 N testing load.

关 键 词：激光选区熔化(SLM) 18Ni300 摩擦磨损 磨损机制 

分 类 号：TG316[金属学及工艺—金属压力加工]