基于超声强化研磨加工的GH4099合金耐磨服役性能提升研究  

Study on the Service Performance Improvement of GH4099 Alloy Based on Ultrasonic Strengthening Grinding Process

作　　者：刘晓初[1,2,3] 唐荟 林子顺 谢智铭 殷浚彬 梁忠伟[1,2,3] Liu Xiaochu;Tang Hui;Lin Zishun;Xie Zhiming;Yin Junbin;Liang Zhongwei(School of Mechanical&Electric Engineering,Guangzhou University,Guangzhou 510006,China;Guangdong Engineering and Technology Research Centre for Strengthen Grinding and High Performance Micro-nanomachining,Guangzhou University,Guangzhou 510006,China;Guangzhou Key Laboratory for Strengthened Grinding and High Performance Machining of Metal Material,Guangzhou University,Guangzhou 510006,China)

机构地区：[1]广州大学机械与电气工程学院,广州510006 [2]广州大学广东省强化研磨高性能微纳加工工程技术研究中心,广州510006 [3]广州大学广州市金属材料强化研磨高性能加工重点实验室,广州510006

出　　处：《机电工程技术》2024年第7期13-17,共5页Mechanical & Electrical Engineering Technology

基　　金：国家重点研发计划项目(2023YFD2101004);国家自然科学基金资助项目(51975136);广东省自然科学基金资助项目(2023A1515011723);教育部产学研协同创新项目(230703950183536、220903950010408);广东省高校重点领域专项(2023ZDZX3016、2019KZDZX1009);广州高校产学研重点项目(202235139);广州大学科研项目(YJ2023034、YJ2021002)。

摘　　要：GH4099合金具有优异的高温热稳定性、高温力学性能和高温抗蠕变性能,用于航空发动机涡轮盘和涡轮叶片的制造,常处于高温、重载、高频的工作环境,但因耐磨服役性能差导致其使用寿命较短。通过超声强化研磨加工技术对GH4099合金分别进行0、3、6、9 min的加工,实现其耐磨服役性能提升。采用超声强化研磨加工技术对GH4099合金板表面进行不同时间的加工处理,并对加工前后的截面显微硬度、金相组织以及表面形貌进行分析。同时,通过往复式摩擦磨损试验对加工前后的试样耐磨性能进行对比分析。研究结果表明:随着加工时间的增加,材料表面显微硬度逐渐增大,最大为432.83 HV,比未加工试样增加43.8%。当加工时间为6 min时,GH4099合金试样的摩擦系数为0.47,磨损率为5.78×10^(-14)m^(3)/(N·m),与未加工试样相比,分别降低24.2%、68.59%,表明超声强化研磨可有效提升GH4099合金耐磨服役性能。GH4099 alloy has excellent high temperature thermal stability,high temperature mechanical properties and high temperature creep resistance,and is used in the manufacture of turbine disc and turbine blade of aeroengine.It often works in high temperature,heavy load and high frequency environment,but its service life is reduced due to poor wear resistance.To improve the wear resistance of GH4099 alloy,ultrasonic strengthening grinding process technology is used to process the alloy 0,3,6 and 9 min respectively.The surface of GH4099 alloy plate is processed by ultrasonic strengthening grinding process technology at different durations,and the cross section microhardness,metallographic structure and surface morphology are analyzed before and after processing.At the same time,the wear resistance of the samples before and after processing is analyzed by reciprocating friction and wear test.The results show that with the increase of processing time,the surface microhardness of the material increases gradually,and the maximum is 432.83 HV,which is 43.8% higher than that of the unprocessed sample.When the processing time is 6 min,the friction coefficient of GH4099 alloy sample is 0.47,and the wear rate is 5.78×10~(-14)m~3/(N·m),which is 24.2% and 68.59% lower than that of the unprocessed sample,respectively,indicating that ultrasonic strengthening grinding process can effectively improve the wear resistance of GH4099 alloy.

关 键 词：超声强化研磨 耐磨损性能 GH4099 表面强化 摩擦磨损试验 

分 类 号：TG139[一般工业技术—材料科学与工程]