EFFECT OF CONFINED PLASTICITY ON INTERFACE FRACTURE IN NANO-COMPONENTS

摘要：

The effect of plasticity on interface crack initiation from a free edge and crack propagation in nano-components is investigated by a proposed nano-cantilever bend method using a specimen consisting of ductile Cu and brittle Si and by a modified four-point bend method.The plasticity of Cu is estimated from the cantilever deflection measured by in situ TEM.Confined plastic deformation occurs near the interface edge and the crack tip.The critical stresses are close to each other in the region of about 10 nm,suggesting that the interface fracture is governed by elastic-plastic stress on the order of 10 nm.

关键词： Interface Plasticity Nano-component Crack initiation Crack propagation

作者: H.Hirakata Y.Takahashi T.Kitamura

作者单位: Department of Mechanical Engineering,Osaka University,Osaka 565-0871,Japan Research Center for Hydrogen Industrial Use and Storage,National Instituteof Advanced Industrial Sci Department of Mechanical Engineering and Science,Kyoto University,Kyoto606-8501,Japan.

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: 106-110

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）