Experimental Study to Assess Fracture Toughness in SPS Sintered WC–10% Co Hardmetal by Modifying the Palmqvist Test
Abstract
:1. Introduction
2. Material and Methods
Length of Cracks
3. Results and Discussions
3.1. Characterization of Samples
3.2. Crack-Behavior Analysis
3.3. Fracture Toughness Analysis
4. Conclusions
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Acknowledgments
Conflicts of Interest
References
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Spectrum | Element (%) | ||
---|---|---|---|
W | Co | C | |
1 | 60.7 | 31.9 | 7.4 |
2 | 62.7 | 30.8 | 6.5 |
3 | 79.2 | 11.1 | 9.7 |
4 | 77.7 | 12.9 | 9.4 |
5 | 86.4 | 4.0 | 9.6 |
6 | 87.7 | 3.0 | 9.3 |
Compound | Load Applied (kgf) | HV (kgf/mm2) | Hardness (GPa) | Indentation Depth (μm) |
---|---|---|---|---|
WC–10% Co | 2 | 2134.30 ± 25.04 | 20.93 ± 0.25 | 4.56 ± 0.17 |
15 | 1700.74 ± 123.01 | 16.68 ± 1.21 | 17.84 ± 1.25 | |
30 | 1663.59 ± 49.65 | 16.31 ± 0.49 | 24.00 ± 0.59 | |
45 | 1607.06 ± 64.67 | 15.76 ± 0.63 | 31.03 ± 1.27 |
Equation | Fracture Toughness (MPa·m1⁄2) | |||||
---|---|---|---|---|---|---|
Linear Measurement | Proposed Measurement | |||||
15 kgf | 30 kgf | 45 kgf | 15 kgf | 30 kgf | 45 kgf | |
Shetty [7] | 10.36 ± 0.14 | 10.87 ± 0.69 | 9.49 ± 021 | 9.23 ± 0.21 | 10.11 ± 0.58 | 9.04 ± 0.22 |
Niihara et al. [15] | 13.36 ± 0.32 | 14.07 ± 0.98 | 12.31 ± 0.25 | 11.91 ± 0.21 | 13.08 ± 0.81 | 11.72 ± 0.21 |
Laugier [16] | 4.44 ± 0.32 | 4.01 ± 0.70 | 2.43 ± 0.17 | 3.39 ± 0.16 | 3.34 ± 0.53 | 2.11 ± 0.12 |
ISO 28079 [17] | 10.32 ± 0.14 | 10.83 ± 0.69 | 9.45 ± 0.21 | 9.20 ± 0.21 | 10.07 ± 0.58 | 9.00 ± 0.22 |
Hanyaloglu et al. [18] | 11.37 ± 0.05 | 11.54 ± 0.25 | 11.05 ± 0.08 | 10.96 ± 0.08 | 11.28 ± 0.22 | 10.88 ± 0.08 |
Lankford [19] | 10.72 ± 0.37 | 10.79 ± 1.20 | 8.11 ± 0.33 | 9.14 ± 0.24 | 9.65 ± 1.02 | 7.40 ± 0.25 |
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Trindade, D.W.; da Silva Guimarães, R.; Lugon, R.D.; Gonçalves Junior, E.R.; dos Santos, A.A.A.; Filgueira, M. Experimental Study to Assess Fracture Toughness in SPS Sintered WC–10% Co Hardmetal by Modifying the Palmqvist Test. Coatings 2022, 12, 1809. https://doi.org/10.3390/coatings12121809
Trindade DW, da Silva Guimarães R, Lugon RD, Gonçalves Junior ER, dos Santos AAA, Filgueira M. Experimental Study to Assess Fracture Toughness in SPS Sintered WC–10% Co Hardmetal by Modifying the Palmqvist Test. Coatings. 2022; 12(12):1809. https://doi.org/10.3390/coatings12121809
Chicago/Turabian StyleTrindade, Daniel Willemam, Renan da Silva Guimarães, Rafael Delorence Lugon, Elias Rocha Gonçalves Junior, Alessandra Agna Araújo dos Santos, and Marcello Filgueira. 2022. "Experimental Study to Assess Fracture Toughness in SPS Sintered WC–10% Co Hardmetal by Modifying the Palmqvist Test" Coatings 12, no. 12: 1809. https://doi.org/10.3390/coatings12121809