摘要
为了探究激光斜冲击强化各工艺因素对FGH95高温合金航空涡轮盘榫接材料强化效果和变形的影响,选取激光能量、光斑直径、冲击次数三个主要因素进行三因素三水平的正交试验,对强化后试样件的表面残余应力和弯曲变形指标进行检测,并将所得的数据进行极差和方差分析,探讨各工艺因素对各指标影响的规律和显著性。结果表明,在试验条件下,影响表面残余压应力大小各因素的主次顺序为:激光能量>冲击次数>光斑直径;影响弯曲变形程度各因素的主次顺序为:冲击次数>光斑直径>激光能量;当因素水平组合为激光能量8 J,光斑直径3 mm,冲击次数1次时,弯曲变形程度相对最小,且能获得较高的表面残余压应力,可符合实际加工要求。因此,对激光斜冲击强化工艺参数进行适当搭配,在保证变形量小的同时也可以获得相对最佳的表面性能。
In order to explore the influence of various technological factors of the laser oblique shock peening on the peening effect and deformation of FGH95 superalloy aircraft turbine disk tenon material. In this paper, laser energy, spot diameter and impact times, as three main technological factors, were selected for carrying out orthogonal test of three factors and three levels. The surface residual stress and bending deformation indicators of the peened specimens were detected, and the obtained data were analyzed by range and variance analysis, to discuss the regularity and the significance of the influence of various technological factors on the various indicators. Experimental results show that, in the case of this paper, significance order of the various factors influencing the size of the surface residual compressive stress is: laser energy > impact times > spot diameter. Significance order of the various factors influencing the degree of bending deformation is: impact times > spot diameter > laser energy, while laser energy is 8 J, spot diameter is 3 mm, impact times is 1. The bending deformation degree of FGH95 superalloy is relatively minimum, and the higher surface residual compressive stress can be obtained, which can meet the actual processing quality requirements. Therefore, smaller deformation and optimum surface properties can be obtained when the laser oblique shock peening process parameters are appropriately matched.
作者
余龙溦
曾镜灵
张永康
林超辉
吴清源
Yu Longwei;Zeng Jingling;Zhang Yongkang;Lin Chaohui;Wu Qingyuan(State Key Laboratory of Precision Electronic Manufacturing Technology and Equipment,Guangdong University of Technology,Guangzhou,Guangdong 510006,China;School of Electromechanical Engineering,Guangdong University of Technology,Guangzhou,Guangdong 510006,China)
出处
《应用激光》
CSCD
北大核心
2022年第4期96-104,共9页
Applied Laser
基金
国家自然科学基金项目(U1608259)
广东省科技计划项目(2017B090911013)。
