激光与光电子学进展, 2018, 55 (2): 021407, 网络出版: 2018-09-10
2024铝合金异形件纳秒激光喷丸成形的实验研究 下载: 1059次
Experimental Study on Special-Shaped Parts of 2024 Aluminum Alloys by Nano-Laser Peen Forming
激光技术 激光喷丸成形 激光诱导冲击波 应力梯度 异形件 laser technique laser peen forming laser induced shock wave stress gradient special-shaped parts
摘要
通过激光喷丸成形实验研究了不同工艺参数对2024铝合金单曲率件及S形双曲率异形件的变形方式和变形量的影响规律,分析了S 形双曲率异形件的制造方法,并实验获得了三维扭曲件。结果表明,当增大激光单脉冲能量和减小试样厚度时,试样容易发生凹面成形,反之,试样容易发生凸面成形。增大冲击区面积和光斑搭接率会增大试样的变形量,但不会改变其变形方式。激光喷丸成形2024铝合金S形双曲率异形件和激光喷丸成形单曲率件的规律一致。为了获得2024铝合金S形双曲率异形件,薄板材可采用“凸面成形+凸面成形”的方式,厚板材可采用“凹面成形+凹面成形”的方式。
Abstract
The effects of different process parameters on the deformation mode and deformation amount of single-curvature forming parts and S-shaped double-curvature special-shaped parts of 2024 aluminum alloys are studied by the laser peen forming experiments, the manufacturing methods of S-shaped double-curvature special-shaped parts are analyzed, and the three-dimensional distortion part is obtained in experiments. The results show that, if increasing the laser pulse energy or decreasing the sample thickness, the concave deformation of samples is more likely to occur, otherwise the convex deformation occurs. The deformation amount of sample increases when the shock area and the coverage rate increase, but the deformation mode dose not change. The formation regularity of S-shaped double-curvature special-shaped parts is consistent with that of single-curvature forming parts. In order to obtain S-shaped double-curvature special-shaped parts of 2024 aluminum alloys, a "concave+concave" deformation mode can be adopted for thin plates, while for thick plates, the "convex+convex" deformation mode can be adopted.
饶宵, 叶云霞, 赵雳, 任旭东, 李琳. 2024铝合金异形件纳秒激光喷丸成形的实验研究[J]. 激光与光电子学进展, 2018, 55(2): 021407. Xiao Rao, Yunxia Ye, Li Zhao, Xudong Ren, Lin Li. Experimental Study on Special-Shaped Parts of 2024 Aluminum Alloys by Nano-Laser Peen Forming[J]. Laser & Optoelectronics Progress, 2018, 55(2): 021407.