金属钛拉伸的分子动力学研究

本文利用分子动力学的研究方法,采用了钛的嵌入式原子势,建立了沿0001]晶向和0110]方向拉伸模型,结果表明:两种方向的拉伸均包含弹性变形阶段、屈服阶段、颈缩阶段、断裂阶段.沿0001]方向拉伸时,滑移系少,取向偏离软取向.变形时屈服强度为3.55GPa,屈服应变为0.063,断裂时的应变达到0.55.沿01...

Molecular Dynamics Simulation of Tension on Titanium

Employing an embedded atomic potential(EAM)and molecular dynamic(MD) method,deformation of titanium along and model of tensile have been established.The results show that tensile process of both two direction contains four stages,elastic deformation,uniform plastic deformation,necking and fracture.The slip system is few and the orientation deviates the soft one when tension is applied along.The yielding stress and strain are 3.55 GPa and 0.095 respectively while the fracture strain is 0.55.For the tension a...