Hardness cartography to increase the nanoindentation resolution in heterogeneous materials: Application to a Ni-based single-crystal superalloy
Hardness cartography to increase the nanoindentation resolution in heterogeneous materials: Application to a Ni-based single-crystal superalloy
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DOI：
10.1016/j.scriptamat.2011.09.042
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发表时间：
2012
影响因子：
6
通讯作者：
C. Tromas;M. Arnoux;X. Milhet
中科院分区：
文献类型：
--
作者：
C. Tromas;M. Arnoux;X. Milhet
对第四代镍基单晶高温合金进行的纳米压痕实验的统计显示了双峰硬度分布，两个平均硬度值仅相差2.5%。使用硬度制图技术结合统计分析证明，硬度值不是随机分布的，而是准确地对应于枝晶和枝晶间区域。在这种情况下，硬度绘图示出推回纳米压痕测试的分辨率极限。
Statistics on nanoindentation experiments performed on a fourth-generation Ni-based single-crystal superalloy reveal a bimodal hardness distribution, with two mean hardness values only 2.5% away from each other. Using a hardness cartography technique combined with the statistical analysis proved that the hardness values are not randomly distributed but correspond exactly to the dendrites and the interdendritic regions. In this context, hardness cartography is shown to push back the resolution limit of the nanoindentation test.