Instrumented Nanoindentation Tests Applied to Bulk Metallic Materials: From Calibration Issue to Pile-Up Phenomena
Abstract
:1. Introduction
2. Set-Up, Materials, and Method
2.1. Calibration Set-Up and Protocols
2.2. Materials
2.3. Pile-Up in Ductile Metallic Materials
3. Results and Discussion
3.1. Calibration Protocol
3.2. Indentation H and Er Measurements
3.3. Pile-Up Phenomenon
4. Concluding Remarks
Funding
Informed Consent Statement
Conflicts of Interest
References
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Sample | Nanoindentation Hardness, GPa | Microhardness, GPa/HV |
---|---|---|
pure Al | 0.21 ± 0.02 | 0.198 ± 0.02/20.5 ± 0.5 |
DHP Cu | 0.67 ± 0.05 | 0.64 ± 0.05/65 ± 2 |
100 Cr6 | 1.91 ± 0.04 | 1.94 ± 0.08/195 ± 5 |
C.I. | 2.45 ± 0.05 | 2.43 ± 0.05/230 ± 5 |
Sample | Constituent a/Constituent b, GPa | Fraction of Constituent a/Constituent b | Mean, GPa |
---|---|---|---|
DHP Cu | 0.74 ± 0.04/0.51 ± 0.02 | 0.58/0.42 ± 0.02 | 0.64 ± 0.08 |
100 Cr6 | 8.55 ± 0.15/1.16 ± 0.10 | 0.09/0.91 ± 0.02 | 1.83 ± 0.15 |
C.I. | 4.30 ± 0.20/1.70 ± 0.10 | 0.28/0.72 ± 0.04 | 2.45 ± 0.10 |
Hardness/% Deviation from Oliver and Pharr Value, GPa | Oliver and Pharr Value (No Pile-Up Is Taken into Account), GPa | |
---|---|---|
Method-1 | 062 ± 0.02/−16 | 0.74 ± 0.02 |
Method-2 | 0.59 ± 0.02/−20 |
Sample | Hardness/% Deviation of Oliver and Pharr Value, GPa | Oliver and Pharr Value (No Pile-Up Is Taken into Account), GPa |
---|---|---|
Method-1 | 0.74 ± 0.02/−11 | 0.83 ± 0.02 |
Method-2 | 0.72 ± 0.02/−13 |
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Cabibbo, M. Instrumented Nanoindentation Tests Applied to Bulk Metallic Materials: From Calibration Issue to Pile-Up Phenomena. Materials 2021, 14, 6360. https://doi.org/10.3390/ma14216360
Cabibbo M. Instrumented Nanoindentation Tests Applied to Bulk Metallic Materials: From Calibration Issue to Pile-Up Phenomena. Materials. 2021; 14(21):6360. https://doi.org/10.3390/ma14216360
Chicago/Turabian StyleCabibbo, Marcello. 2021. "Instrumented Nanoindentation Tests Applied to Bulk Metallic Materials: From Calibration Issue to Pile-Up Phenomena" Materials 14, no. 21: 6360. https://doi.org/10.3390/ma14216360