Enhancing the Hardness and Compressive Response of Magnesium Using Complex Composition Alloy Reinforcement
Abstract
:1. Introduction
2. Materials and Methods
2.1. Synthesis of Materials
2.2. Characterization
3. Results and Discussion
3.1. Analysis on Reinforcement Particles
3.2. Microstructure
3.3. Mechanical Properties
4. Conclusions
- New Mg-CCA composites can be successfully developed using a powder metallurgy route incorporating microwave sintering and hot extrusion.
- The addition of ball-milled CCA reinforcement particles assisted in a significant refinement of the matrix grain size. The measurement on the grain size distribution showed a normal distribution in the Mg, Mg-2.5CCA, and Mg-7.5CCA composite compositions while a right-skewed distribution was observed in the Mg-5CCA composite.
- Hardness increased with an increasing amount of reinforcement addition in the Mg-CCA composites. The maximum microhardness of 80 HV was achieved in the Mg-7.5 wt % CCA composite.
- The compressive yield strength and ultimate compressive strength were significantly enhanced in the Mg-CCA composites while maintaining the same ductility levels as unreinforced Mg. The newly developed Mg-CCA composites showed higher strength under compressive loading when compared to Mg composites containing ball-milled amorphous particles and Mg-alloy-based composites containing micron-size particle reinforcement. The achievement of enhanced mechanical properties in Mg-CCA composites highlighted the effectiveness of using ball-milled CCA particles as a reinforcement in Mg.
Acknowledgments
Author Contributions
Conflicts of Interest
References
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Materials | Grain Size (µm) | Aspect Ratio | Microhardness (HV) |
---|---|---|---|
Mg | 34 ± 4 | 1.4 ± 0.3 | 47 ± 2 |
Mg-2.5 wt % CCA | 14 ± 4 | 1.4 ± 0.3 | 56 ± 6 |
Mg-5.0 wt % CCA | 12 ± 5 | 1.5 ± 0.3 | 70 ± 6 |
Mg-7.5 wt % CCA | 12 ± 4 | 1.5 ± 0.3 | 80 ± 7 |
Materials | 0.2% Compressive Yield Strength (MPa) | Ultimate Compressive Strength (MPa) | Compressive Failure Strain (%) |
---|---|---|---|
Mg | 91 ± 8 | 263 ± 16 | 12 ± 2 |
Mg-2.5 wt % CCA (1.6 vol %) | 127 ± 5 (40%) | 414 ± 6 (57%) | 15 ± 1 |
Mg-5.0 wt % CCA (3.2 vol %) | 143 ± 2 (57%) | 469 ± 18 (78%) | 10 ± 2 |
Mg-7.5 wt % CCA (4.9 vol %) | 148 ± 4 (63%) | 472 ± 19 (79%) | 15 ± 2 |
Mg-6 vol % Ni50Ti50 [17] | 89 ± 3 | 368 ± 8 | 15.1 ± 1.5 |
Mg-5 vol % Ni60Nb40 [18] | 130 ± 11 | 320 ± 11 | 18.4 ± 1.3 |
AT81-5 vol % SiC [9] | 127 ± 10 | 301 ± 20 | 11.4 ± 0.5 |
AZ91D-3 vol % TiC [10] | - | 320 * | 17 * |
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Tun, K.S.; Zhang, Y.; Parande, G.; Manakari, V.; Gupta, M. Enhancing the Hardness and Compressive Response of Magnesium Using Complex Composition Alloy Reinforcement. Metals 2018, 8, 276. https://doi.org/10.3390/met8040276
Tun KS, Zhang Y, Parande G, Manakari V, Gupta M. Enhancing the Hardness and Compressive Response of Magnesium Using Complex Composition Alloy Reinforcement. Metals. 2018; 8(4):276. https://doi.org/10.3390/met8040276
Chicago/Turabian StyleTun, Khin Sandar, Yuming Zhang, Gururaj Parande, Vyasaraj Manakari, and Manoj Gupta. 2018. "Enhancing the Hardness and Compressive Response of Magnesium Using Complex Composition Alloy Reinforcement" Metals 8, no. 4: 276. https://doi.org/10.3390/met8040276
APA StyleTun, K. S., Zhang, Y., Parande, G., Manakari, V., & Gupta, M. (2018). Enhancing the Hardness and Compressive Response of Magnesium Using Complex Composition Alloy Reinforcement. Metals, 8(4), 276. https://doi.org/10.3390/met8040276