Hydrodynamic Effects on Surface Morphology Evolution of Titanium Alloy under Intense Pulsed Ion Beam Irradiation

The hydrodynamic effects of molten surface of titanium alloy on the morphology evolution by intense pulsed ion beam （IPIB） irradiation are studied. It is experimentally revealed that under irradiation of IPIB pulses, the surface morphology of titanium alloy in a spatial scale of μm exhibits an obvio...

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Published inChinese physics letters Vol. 34; no. 5; pp. 84 - 87
Main Author 董艇舰 荣翠华 梁家昌 刘波 赵小勇 陈董燕 张彬 王浩 李海波 张世贵 蒋玉平 罗兵 周小文 王涛 喻晓 乐小云
Format Journal Article
LanguageEnglish
Published 01.05.2017
Subjects
动力学效应
强脉冲离子束辐照
形貌演化
形貌演变
流体动力学模拟
表面张力
金表面
钛合金
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Summary:The hydrodynamic effects of molten surface of titanium alloy on the morphology evolution by intense pulsed ion beam （IPIB） irradiation are studied. It is experimentally revealed that under irradiation of IPIB pulses, the surface morphology of titanium alloy in a spatial scale of μm exhibits an obvious smoothening trend. The mechanism of this phenomenon is explained by the mass transfer caused by the surface tension of molten metal. Hydrodynamic simulation with a combination of the finite element method and the level set method reveals that the change in curvature on the molten surface leads to uneven distribution of surface tension. Mass transfer is caused by the relief of surface tension, and meanwhile a flattening trend in the surface morphology evolution is achieved.
Bibliography:The hydrodynamic effects of molten surface of titanium alloy on the morphology evolution by intense pulsed ion beam （IPIB） irradiation are studied. It is experimentally revealed that under irradiation of IPIB pulses, the surface morphology of titanium alloy in a spatial scale of μm exhibits an obvious smoothening trend. The mechanism of this phenomenon is explained by the mass transfer caused by the surface tension of molten metal. Hydrodynamic simulation with a combination of the finite element method and the level set method reveals that the change in curvature on the molten surface leads to uneven distribution of surface tension. Mass transfer is caused by the relief of surface tension, and meanwhile a flattening trend in the surface morphology evolution is achieved.
11-1959/O4
Ting-Jian Dong1, Cui-Hua Rong2, Jia-Chang Liang1, Bo Liu3 Xiao-Yong Zhao3, Dong-Yan Chen3, Bin Zhang3, Hao Wang1, Hai-Bo Li3, Shi-Gui Zhang3, Yu-Ping Jiang , Bing Luo3, Xiao-Wen Zhou3, Tao Wang1, Xiao Yu2,4, Xiao-Yun Le2（ 1Engineering Technology Training Center, Civil Aviation University of China, Tianjin 300300 ;2School of Physics and Nuclear Energy Engineering, Beihang University, Beijing 100191 ; 3Sichuan Chengfa Aero Science and Technology Co. Ltd, Chengdu 610000 ; 4School of Space and Environment, Beihang University, Beijing 100191）
ISSN:0256-307X
1741-3540
DOI:10.1088/0256-307X/34/5/056101