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

• 作 者: 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
• 机 构: Engineering Technology Training Center,Civil Aviation University of China,School of Physics and Nucl
• 出 处: Chinese Physics Letters
• 发表日期: 2017年05期
• 关键词: irradiation titanium molten explained hydrodynamic curvature viscosity poral rou

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 mean while a flattening trend in the surface morphology evolution is achieved.

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 mean while a flattening trend in the surface morphology evolution is achieved.