Laser & Optoelectronics Progress, Volume. 58, Issue 17, 1714009(2021)
Effect of Pulse Times on Texture Morphology under Millisecond Laser
In order to explore the evolution law of the texture morphology under the action of multi-pulse millisecond laser, a two-dimensional symmetric model is established in this paper, which considered the influence of recoil pressure, surface tension, and evaporation rate on the change of molten pool, and is used to analyze the evolution law of the texture morphology and carry out experimental verification. The results show that under the action of recoil pressure, the depth and diameter of the pit increase with the increase of the number of pulses. The central bulge and the edge bulge are related to the thermal capillary force and Laplace pressure, and the height of bulge decreases with the increase of the number of pulses. At the edge of the molten pool, the molten material flows to the center under the influence of the thermal capillary force, and the height of the edge bulge decreases with the increase of the number of pulses.
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Cheng Chen, Xijun Hua, Dongpo Zhu, sheng Xu, xuan Xie. Effect of Pulse Times on Texture Morphology under Millisecond Laser[J]. Laser & Optoelectronics Progress, 2021, 58(17): 1714009
Category: Lasers and Laser Optics
Received: Oct. 22, 2020
Accepted: Dec. 17, 2020
Published Online: Sep. 14, 2021
The Author Email: Chen Cheng (2496136366@qq.com)