摘要
研究了直升机涡轮导向器叶片的激光修复技术。以直升机四级涡轮导向器分解叶片为基材,以镍基合金为熔覆材料,在激光功率为1～2kW,扫描速度为2～15mm/s,光斑直径为1～3mm,层厚为0.2～0.6mm的工艺参数条件下,研究熔覆层的表面成形、显微硬度以及微观组织形貌。结果表明,综合叶片宏观形态、硬度分析与扫描电镜分析结果,可以得到组织细密、与基体呈良好冶金结合且无明显微观裂纹的熔覆层。因此,采用激光修复技术对受损涡轮导向器叶片进行修复的方案是可行的。
The repair of the helicopter turbine oriented implement leaf blade was investigated by employing the laser repair technology.The fourth turbine oriented implement leaf blade of a helicopter and the Ni-base alloy were utilized as the substrate and layer cladding material,respectively.The surface figuration,microhardness and microstructure of the cladding layer were studied under laser power of 1～2 kW,scan velocity of 2～15 mm/s,facula diameter of 1～3 mm and thickness of 0.2～0.6 mm.The rigidity analysis,scanning electron microscope（SEM）observations and the macroscopical modality of the repaired leaf blade indicate that laser cladding layers of close organization and good metallurgy union were obtained.Therefore,it is feasible to employ the laser modification technology to repair the turbine oriented implement leaf blade shattered.
出处
《光学学报》
EI
CAS
CSCD
北大核心
2010年第8期2311-2316,共6页
Acta Optica Sinica
关键词
激光技术
叶片修复
激光修复技术
直升机
laser technique
repair of leaf blade
laser repair technology
helicopter
