Hardness cartography to increase the nanoindentation resolution in heterogeneous materials: Application to a Ni-based single-crystal superalloy

被引：31
|
作者：
Tromas, C. [1 ]
Arnoux, M. [1 ]
Milhet, X. [1 ]
机构：
[1] Univ Poitiers, CNRS, Dept Phys & Mecan Mat, Inst P,ENSMA,UPR 3346,SP2MI, F-86962 Futuroscope, France
来源：
SCRIPTA MATERIALIA | 2012年 / 66卷 / 02期
关键词：
Nanoindentation; Mechanical properties; Superalloys; Hardness; MECHANICAL-PROPERTIES;
D O I：
10.1016/j.scriptamat.2011.09.042
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
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. En this context, hardness cartography is shown to push back the resolution limit of the nanoindentation test. (C) 2011 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：77 / 80
页数：4
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