PHYSICALLY BASED CRYSTAL PLASTICITY MODELLING OF NANO-INDENTATION

摘要：

A physically based 3D,large deformation implicit crystal plasticity model has been developed and implemented within an ABAQUS user-defined finite element to enable incorporation of length scale effects by relating the absolute GND density to plastic strain gradient.The 3D crystal slip model has been used to model the iron nanoindentation experiments of Randmand et al. 1 .Hardness-indentation depth curves with and without the inclusion of GND density incorporated in the model have been investigated and compared with the experiments.The model is shown to predict correctly the progressive decrease in hardness with increasing indentation depth.

关键词： lengthscale effects nanoindentation GND

作者: H.Liang F.P.E.Dunne A.J.Wilkinson

作者单位: Department of Engineering Science,Oxford University,Parks Road,Oxford OX13P J,UK Department of Materials,Oxford University,Parks Road,Oxford OX1 3PH,UK

会议类型: 国际会议

会议名称: 第二届国际非均质材料力学会议(The Second International Conference on Heterogeneous Material Mechanics)

会议地点: 安徽黄山

会议语种:英文

页码: 303-307

在线出版日期: 2008-06-03（万方平台首次上网日期，不代表论文的发表时间）