Indentation in F.C.C. Single Crystals

Indentation in F.C.C. Single Crystals
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F.C.C. 中的压痕

DOI：
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发表时间：
2012
期刊：
影响因子：
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通讯作者：
V. Silberschmidt
V. Silberschmidt
中科院分区：
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文献类型：
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作者：
A. Zahedi;M. Demiral;A. Roy;V. Babitsky;V. Silberschmidt

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本文建立了纳米压痕的三维晶体塑性有限元模型，分析了面心立方(F.C.C.)高纯度的铜单晶。该模型已在商业有限元软件ABAQUS/fi中作为用户自定义的NED子程序实现，并用于研究单晶不同晶体取向的情况。研究了压头材料的晶体取向、压头角度和压头与工件材料的接触条件等因素对载荷-位移特性的影响。结果表明，所获得的压痕周围的表面形貌具有各向异性。
A three-dimensional crystal-plasticity finite element model of nano-indentation is developed in this paper to analyze deformation of a face-centred cubic (f.c.c.) high-purity single crystal of copper. This model was implemented as a user-defined subroutine in the commercial finite element software ABAQUS/Standard and used to study cases with different crystallographic orientations of the single crystal. The effects of various factors – crystallographic orientation of the indented material, an indenter angle and contact conditions between the indenter and workpiece material – on the load-displacement characteristics are studied. The obtained results show an anisotropic nature of surface topography around the obtained indents.