| 引用本文: | 张阳,黄传兵,骆丽杰,兰昊,李建保,张伟刚.激光熔覆CoNiCrAlY高温合金格栅的高速刮削性能[J].中国表面工程,2018,31(2):165~171 |
| ZHANG Yang,HUANG Chuan-bing,LUO Li-jie,LAN Hao,LI Jian-bao,ZHANG Wei-gang.High-speed Scrapping Properties of Grid-structured CoNiCrAlY Superalloy by Laser Cladding[J].China Surface Engineering,2018,31(2):165~171 |
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| 激光熔覆CoNiCrAlY高温合金格栅的高速刮削性能 |
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张阳1,2, 黄传兵2, 骆丽杰1, 兰昊2, 李建保1, 张伟刚2
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1.海南大学 材料与化工学院, 海口 570228;2.中国科学院过程工程研究所 多相复杂系统国家重点实验室, 北京 100190
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| 摘要: |
| 采用光纤激光同轴送粉技术制备了CoNiCrAlY高温合金格栅结构熔覆层，采用模拟飞机发动机叶尖高速刮削试验机研究了熔覆层的刮削性能。采用扫描电子显微镜、三维数字显微镜、激光共聚焦显微镜、显微硬度计等对合金格栅的微观结构和力学性能进行了分析测试。结果表明：研制的熔覆层具有致密的微观组织，物相组成与前驱粉末基本一致；熔覆层的维氏显微硬度值为（357±20） HV0.2；1 000℃热处理后的熔覆层与处理前的组织结构无太大区别，维氏显微硬度值为（345±20） HV0.2；在相同刮削实验参数条件下，间距2、3和4 mm格栅结构的磨损量差别较大，其中3 mm格栅结构及其对摩的叶片的质量损失都最小，且摩擦振动较小，表明间距为3 mm格栅结构的可刮削性能优于间距为2 mm和4 mm格栅结构。 |
| 关键词: 激光熔覆 格栅结构 刮削性能 高温合金 |
| DOI：10.11933/j.issn.1007-9289.20171030001 |
| 分类号:TG174.44;TG115.58 |
| 基金项目:国家自然科学基金（51471159） |
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| High-speed Scrapping Properties of Grid-structured CoNiCrAlY Superalloy by Laser Cladding |
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ZHANG Yang1,2, HUANG Chuan-bing2, LUO Li-jie1, LAN Hao2, LI Jian-bao1, ZHANG Wei-gang2
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1.Materials and Chemical Engineering, Hainan University, Haikou 570228;2.State Key Laboratory of Multi-phase Complex Systems, Institute of Process Engineering, Chinese Academy of Science, Beijing 100190
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| Abstract: |
| Grid-structured CoNiCrAlY superalloy were fabricated by coaxial laser cladding. The scrapping properties was studied by aircraft engine blade tip high-speed rubbing test. Correspondingly, microstructures and mechanical properties were characterized by using electron scanning microscopy, 3D digital microscopy, lasers scanning confocal microscopy, a micro-hardness tester, respectively. Results show that the laser-cladding coating exhibits a dense organizational structure and fundamentally consistent phase composition with its precursor powder. The average Vickers hardness of the laser-cladding coating is (357±20) HV0.2. There is no significant differences between the laser-cladding coating treated at 1 000℃ and the laser cladding. The average Vickers hardness of the laser-cladding coating is (345±20) HV0.2. At the same testing condition, the wear loss of different grid structures fluctuates significantly. The minimum wear loss and vibration are found in 3 mm grid-structure against its blade, indicating a better high-speed scrapping property to that of 2 mm and 4 mm. |
| Key words: laser cladding grid-structure high-speed scrapping property superalloy |
