中国激光, 2016, 43 (10): 1002002, 网络出版: 2016-10-12
GH4169薄壁零件表面损伤的激光沉积修复试验研究
Experimental Study on Laser Deposition Repair of Surface Damage of GH4169 Thin-Walled Components
激光技术 激光沉积修复 GH4169合金 扫描方式 显微组织 拉伸性能 laser technique laser deposition repair GH4169 alloy scanning mode microstructure tensile property
摘要
研究了不同基体厚度和扫描方式对激光沉积修复(LDR)GH4169合金修复件的残余应力、微观组织及拉伸性能的影响。结果表明,基体厚度越小,即修复体厚度越大,残余应力和枝晶间析出的Laves相体积分数就越大,室温抗拉强度和断后伸长率则越小。试验表明,短边扫描有利于提高激光沉积修复GH4169合金的室温拉伸性能。
Abstract
The effects of substrate thickness and scanning mode on the residual stress, microstructure, and tensile property of GH4169 alloy components after laser deposition repair (LDR) are investigated. The results show that the smaller the substrate thickness or the larger the deposition thickness is,the larger both the residual stress and the volume fraction of the interdendritic Laves phase are, in contrast, the smaller both the tensile strength and the percentage elongation after fracture at room temperature are. The experiment indicates that the short edge scanning mode is beneficial to improving the tensile property at room temperature of GH4169 alloy after LDR.
卞宏友, 董文启, 王世杰, 曲伸, 杨光, 钦兰云, 王维. GH4169薄壁零件表面损伤的激光沉积修复试验研究[J]. 中国激光, 2016, 43(10): 1002002. Bian Hongyou, Dong Wenqi, Wang Shijie, Qu Shen, Yang Guang, Qin Lanyun, Wang Wei. Experimental Study on Laser Deposition Repair of Surface Damage of GH4169 Thin-Walled Components[J]. Chinese Journal of Lasers, 2016, 43(10): 1002002.