刃型位错形成对面心立方金属Cu体积的影响  

Effect of the formation of edge dislocation on volume in fcc copper

作　　者：何坤[1] 韩明[2] 

机构地区：[1]山东理工大学机械工程学院,淄博255049 [2]福建工程学院材料科学与工程学院,福州350108

出　　处：《原子与分子物理学报》2015年第3期463-465,共3页Journal of Atomic and Molecular Physics

基　　金：国家自然科学基金(51071125)

摘　　要：使用分子动力学方法,采用嵌入原子势(EAM),在0K下模拟了面心立方金属Cu单晶的刃型位错,研究了刃型位错产生对晶体体积的影响.模拟结果表明,无论使用推入还是抽出原子层的方法获得刃型位错,平衡状态时刃型位错的存在使晶体体积增大.The edge dislocation of single crystal copper has been simulated from molecular dynamics simulation with EAM potential at 0K.Also, the effect of the formation of edge dislocation on crystalline volume has been studied.The results show that the existence of edge dislocation in equilibrium state makes the volume of the crys-tal dilate, either by pushing or by extracting atom layers method to acquire edge dislocation.

关 键 词：刃型位错 面心立方 体积 分子动力学模拟 

分 类 号：O77[理学—晶体学]