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Proceedings Paper

Simulation of vaporization in low fluence nanosecond laser ablation of aluminum alloy
Author(s): Chaoqun Song; Shiyun Dong; Shixing Yan; Enzhong Li; Binshi Xu; Peng He
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Paper Abstract

This paper presents a multi-phase flow model for the nanosecond laser ablation of aluminum alloy at a low fluence based on finite volume method, considering gravity, recoil pressure, buoyancy and surface tension to describe vaporization. Actual morphology of ablation crater was measured by a laser scanning confocal microscope to verify the model. Results show that vaporization is the main ablation mechanism for 100ns laser ablation at low fluences, and the peak temperature is only 50% of critical temperature. Both the experimental and calculated crater have a wall-like bulge around the rim, as a result of impact of recoil pressure and resolidification of pushed liquid metal. The calculated depth and diameter of crater are in good agreement with the corresponding experimental measurement indicating the feasibility of the model.

Paper Details

Date Published: 5 March 2018
PDF: 6 pages
Proc. SPIE 10710, Young Scientists Forum 2017, 1071041 (5 March 2018); doi: 10.1117/12.2317638
Show Author Affiliations
Chaoqun Song, Academy of Armored Force Engineering (China)
Harbin Institute of Technology (China)
Shiyun Dong, Academy of Armored Force Engineering (China)
Harbin Institute of Technology (China)
Shixing Yan, Academy of Armored Force Engineering (China)
Enzhong Li, Academy of Armored Force Engineering (China)
Binshi Xu, Academy of Armored Force Engineering (China)
Peng He, Harbin Institute of Technology (China)


Published in SPIE Proceedings Vol. 10710:
Young Scientists Forum 2017
Songlin Zhuang; Junhao Chu; Jian-Wei Pan, Editor(s)

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