【作者】 周熠颖；

【导师】 李俊昌；

【作者基本信息】 昆明理工大学 ， 材料学， 2001， 硕士

【摘要】 本文首先阐述的关于激光熔凝的宏观特征及其国内外研究状况，继而阐述了本文之研究工作。具体探讨了如下工作： 1．首先探讨了热传导的M.Chester方程，并用声子理论对上述方程进行了微观分析，借助固体量子理论导出了该方程的行波解。 2．对热传导主要参量——热传导系数作了理论分析。 3．用量子统计、量子力学和热力学理论分析了激光熔凝的微观机制及相应的热力学性质——粒子的扩散问题、界面运动热力学及激光熔凝自由能等热力学参量。并阐述了与上述理论相关的一些实验结果。更多还原

【Abstract】 At first, the recent developments of the laser-remelting technologies are introduced, and the macroscopic characters of the technology are analyzecf briefly. Then the main work in this thesis are researched as follows: 1 )The thesis approached the thermal conduct equation? M.Chester Equations, which have closely relations with the characters of the laser-remelting, and further analyzed the equations in microscopic by phonon theory and the traveling wave solutions of Chester Eq.s wave solved by means of solid quantum theory. 2)The thermal conduct coefficient, i.e. the main parameter of the thermal conduct equation, is analyzed theoretically. 3)The micro mechanism and the thermodynamic characters of the laser-remelting, that is, the microscopic particle diffusion, thermodynamic motion of the boundary surface and free energy of the laser-remelting etc., are analysed by means of quantum mechanics, quantum statistic mechanic and thermodynamics. And then the results of some related experiments are intruduced.更多还原