Particle Size and Particle Percentage Effect of AZ61/SiCp Magnesium Matrix Micro- and Nano-Composites on Their Mechanical Properties Due to Extrusion and Subsequent Annealing
Abstract
:1. Introduction
2. Materials and Methods
2.1. Materials
2.2. Fabrication of the Ingot and Plate of the Mg MMCs and Their Heat Treatments
2.3. Morphological and Mechanical Properties
3. Results and Discussion
3.1. Mechanical Properties
3.2. Morphology and SEM Observation
3.3. Comparison of the Mechanical Measurements of Mg MMCs
4. Conclusions
- The mechanical properties of the annealed SiCp-free AZ61 alloy plate are better than those of the unannealed SiCp-free AZ61 alloy plate.
- Both the annealed and unannealed AZ61/SiCp/1 μm and AZ61/SiCp/50 nm MMC plates exhibited greater strength, hardness, and ductility that did the SiCp-free (i.e., AZ61) MMC Mg alloy plate.
- The annealed AZ61/SiCp/1 μm and AZ61/SiCp/50 nm MMC plates exhibited improvements in hardness and strength, but ductility slightly decreased because of the precipitation of the β phase.
- Adding submicron SiCp and nano SiCp particles to AZ61 during processing resulted in the advantages of strengthening the mechanical properties and increasing ductility.
- Annealing can improve the ductility and formability of Mg alloys and Mg MMCs with micron SiCp, but it weakens those properties in Mg MMCs with submicron SiCp and nano SiCp.
- The SiC/AZ61 MMCs in the present study exhibited more complete mechanical property results compared with other studies.
Acknowledgments
Author Contributions
Conflicts of Interest
References
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Al | Zn | Mn | Fe | Si | Cu | Ni | Mg |
---|---|---|---|---|---|---|---|
5.95 | 0.64 | 0.26 | 0.005 | 0.009 | 0.0008 | 0.0007 | Bal. |
Notation | Specification | Yield Strength, [MPa] (% Change) | Ultimate Tensile Strength, [MPa] (% Change) | Hardness [HV] (% Change) | Elongation (% Change) | Reference |
---|---|---|---|---|---|---|
AZ61/BA | Extruded AZ61 Mg alloy before annealing | 131.9 ± 1.2 (0) | 310.9 ± 3.8 (0) | 60.8 ± 0.9 (0) | 23.5 ± 1.5% (0) | This study |
AZ61/AA | Extruded AZ61 Mg alloy after annealing | 132.7 ± 1.9 (+0.6) | 327.9 ± 1.9 (+5.5) | 65.9 ± 1.1 (+8.4) | 40.8 ± 3.0% (+73.6) | This study |
AZ61/10 μm SiC/BA | Extruded AZ61 with 0.5, 1, 2 wt % 10 μm SiCp AZ61 MMCs plate before annealing | 133.0–135.1 (+1.6) | 324.2–326.2 (+4.6) | 61.3–63.0 (+2.2) | 27.2–33.5% (+29.1) | This study |
AZ61/10 μm SiC/AA | Extruded AZ61 with 0.5, 1, 2 wt % 10 μm SiCp AZ61 MMCs plate after annealing | 128.7–134.5 (−0.2) | 309.7–329.2 (+2.8) | 63.9–65.2 (+6.2) | 31.0–37.6% (+46.0) | This study |
AZ61/1 μm SiC/BA | Extruded AZ61 with 0.5, 1, 2 wt % 1 μm SiCp AZ61 MMCs plate before annealing | 133.6–135.8 (+2.1) | 326.5–329.5 (+5.5) | 62.1–63.6 (+3.1) | 40.2–42.7% (+76.4) | This study |
AZ61/1 μm SiC/AA | Extruded AZ61 with 0.5, 1, 2 wt % 1 μm SiCp AZ61 MMCs plate after annealing | 135.5–137.0 (+3.3) | 332.2–336.1 (+7.5) | 63.3–65.1 (+5.6) | 36.6–39.1% (+61.1) | This study |
AZ61/50 nm SiC/BA | Extruded AZ61 with 0.5, 1, 2 wt % 50 nm SiCp AZ61 MMCs plate before annealing | 134.1–136.4 (+2.5) | 327.5–331.0 (+5.9) | 62.0–63.3 (+3.0) | 40.8–43.1% (+78.5) | This study |
AZ61/50 nm SiC/AA | Extruded AZ61 with 0.5, 1, 2 wt % 50 nm SiCp AZ61 MMCs plate after annealing | 134.7–136.8 (+2.9) | 328.2–334.6 (+6.6) | 63.0–64.5 (+4.9) | 37.3–40.6% (+65.0) | This study |
AZ61/4.5 μm SiC/T5 | Extruded AZ61 with 1, 2, 5 wt % 4.5μm SiCp AZ61 MMCs tube after T5 treatment | 136.0–145.0 (+4.9) | 291.0–315.0 (+2.9) | 67.2–75.6 (+2.7) | NA | [34] |
AZ61/100 nmSiC/AA | AZ61 with 1 wt % 100 nm SiCp AZ61 MMCs after annealing | NA | NA | 68–78 (+2.1) | NA | [35] |
AZ61/20 μmSiC/sintered | Sintered AZ61 with 5 wt % 20μm SiCp AZ61 MMCs | NA | NA | 71–96 (NA) | NA | [36] |
AZ61/10μm SiC | Casted AZ61 with 3, 6, 18 vol % 10μm SiCp AZ61 MMCs | 168–186 (+5.9) | NA | NA | 17–45% (−48.7) | [37] |
AZ61/10 μmSiC | Casted AZ61 with 3, 6, 9 vol % 10 μm SiCp AZ61 MMCs | NA | NA | 79–115 (+48.7) | NA | [38] |
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Zhao, W.; Huang, S.-J.; Wu, Y.-J.; Kang, C.-W. Particle Size and Particle Percentage Effect of AZ61/SiCp Magnesium Matrix Micro- and Nano-Composites on Their Mechanical Properties Due to Extrusion and Subsequent Annealing. Metals 2017, 7, 293. https://doi.org/10.3390/met7080293
Zhao W, Huang S-J, Wu Y-J, Kang C-W. Particle Size and Particle Percentage Effect of AZ61/SiCp Magnesium Matrix Micro- and Nano-Composites on Their Mechanical Properties Due to Extrusion and Subsequent Annealing. Metals. 2017; 7(8):293. https://doi.org/10.3390/met7080293
Chicago/Turabian StyleZhao, Weigang, Song-Jeng Huang, Yi-Jhang Wu, and Cheng-Wei Kang. 2017. "Particle Size and Particle Percentage Effect of AZ61/SiCp Magnesium Matrix Micro- and Nano-Composites on Their Mechanical Properties Due to Extrusion and Subsequent Annealing" Metals 7, no. 8: 293. https://doi.org/10.3390/met7080293
APA StyleZhao, W., Huang, S. -J., Wu, Y. -J., & Kang, C. -W. (2017). Particle Size and Particle Percentage Effect of AZ61/SiCp Magnesium Matrix Micro- and Nano-Composites on Their Mechanical Properties Due to Extrusion and Subsequent Annealing. Metals, 7(8), 293. https://doi.org/10.3390/met7080293