引用本文:崔爱永1，胡芳友1，张忠文2，卢长亮1，易德先1，邹 刚1.钛合金表面激光熔覆修复技术[J].中国表面工程,2011,24(2):61~64
CUI Ai?yong1, HU FANG?you1, ZHANG Zhong?wen2, LU Chang?liang1, YI De?xian1, ZOU Gang1.Titanium Alloy Laser Cladding Repair Technique[J].China Surface Engineering,2011,24(2):61~64
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钛合金表面激光熔覆修复技术
崔爱永1，胡芳友1，张忠文2，卢长亮1，易德先1，邹 刚11,2
1. 海军航空工程学院青岛分院 航空机械系，青岛 266041;2. 海军驻沈阳导弹专业军事代表室，沈阳 110034
摘要:
为探讨压气机叶片损伤修复新工艺，采用CO2激光熔覆技术，在钛合金表面进行了激光熔覆Ti/Cr2O3复合涂层试验。通过分析各工艺参数对熔覆层质量的影响规律，优化参数组合。结果表明，激光功率为1.8 kW、扫描速度6 mm/s时，稀释率达到最小，为3.95 %，得到连续、均匀、无裂纹和气孔的高质量熔覆层，实现了良好的冶金结合。显微硬度明显提高，最高可达1050 HV，平均约为基材的3倍。
关键词:  钛合金  激光熔覆  工艺优化  显微硬度
DOI：
分类号:
基金项目:国家博士后科学基金项目（20060391000）
Titanium Alloy Laser Cladding Repair Technique
CUI Ai?yong1, HU FANG?you1, ZHANG Zhong?wen2, LU Chang?liang1, YI De?xian1, ZOU Gang11,2
1. Qingdao Branch, Naval Aeronautical Engineering College, Aeronautical Mechanical Institute, Qingdao 266041;2. Naval Deputation in Shenyang, Shenyang 110034
Abstract:
To research and development new technologies of compressor blade damage remanufacturing, an experiment of laser cladding Ti/Cr2O3 on titanium alloy surface by CO2 had been carried out. The effects of processing parameters on the cladding layer height, dilution rate and penetration into the substrate had been examined. It is found that the dilution rate reachs the lowest value (3.95 %) at the laser power of 1.8 kV and the scanning speed of 6 mm/s. A white narrow metallurgical bonding zone is formatted at interface between the cladding and the substrate, about 10～20 μm. The cladding layer is continuous, homogeneous, poreless and crackless by optimizing the technical parameters. The hardness of the cladding layer increased obviously, the maximum is 1150 HV, the average is about 3 times of the substrate.
Key words:  titanium alloy  laser cladding  processing parameter optimization  microhardness
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