Indentation size effect: reality or artefact?
Indentation size effect: reality or artefact?
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压痕尺寸效应：现实还是人为？
DOI：
10.1007/bf00360764
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发表时间：
1996
影响因子：
4.5
通讯作者：
R. Bigot
中科院分区：
文献类型：
--
作者：
A. Iost;R. Bigot
本次调查的目的是研究显微硬度的载荷依赖性，通常在 5-500 gf 范围内。这种众所周知的现象称为压痕尺寸效应 (ISE)，并针对两组样品进行了研究：钛合金和铝合金。首先将硬度随施加载荷的变化与各种现有模型进行比较，并通过共焦显微镜测量凹痕附近的表面轮廓。压痕印刷附近堆积的形成导致了压痕对角线的校正，这与我们的实验数据以及文献中的其他结果非常吻合。对于所研究的材料，ISE 效应是人为因素，即硬度随所施加载荷的变化只是样品与压头之间接触表面变化的结果。
The purpose of this investigation was to study the load dependence of the microhardness, typically in the range 5–500 gf. This well known phenomena is called the indentation size effect (ISE) and was investigated for two sets of specimens: titanium and aluminium alloys. Variation of the hardness with applied load was first compared with various existing models and the surface profile, near the indent, was measured by confocal microscopy. The formation of pile-ups near the indentation print led to the correction of the indent diagonal which is found to fit well with our experimental data as well as with other results in the literature. For the materials investigated, the ISE effect is an artefact, i.e. the variation of hardness with the applied load is only a consequence of the variation of the contact surface between the specimen and the indenter.