High-Strength Ultra-Fine-Grained Hypereutectic Al-Si-Fe-X (X = Cr, Mn) Alloys Prepared by Short-Term Mechanical Alloying and Spark Plasma Sintering
Abstract
:1. Introduction
2. Results
2.1. Microstructure and Phase Compositions
2.2. Mechanical Properties
3. Discussion
3.1. Microstructure
3.2. Mechanical Properties
4. Materials and Methods
5. Conclusions
Acknowledgments
Author Contributions
Conflicts of Interest
References
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Alloy (wt %) | Stage of Preparation | 2θ (°) | FWHM |
---|---|---|---|
Al (111) | Al (111) | ||
Al-20Si-10Fe-6Cr | as mixed | 38.379 | 0.140 |
MA | 38.427 | 0.264 | |
MA + SPS | 38.433 | 0.195 | |
400 °C/100 h | 38.458 | 0.194 | |
Al-20Si-10Fe-6Mn | as mixed | 38.408 | 0.131 |
MA | 38.449 | 0.286 | |
MA + SPS | 38.445 | 0.195 | |
400 °C/100 h | 38.458 | 0.195 |
Alloy (Preparation) | Element (at %) | Corresponding Phase | ||||
---|---|---|---|---|---|---|
Point No. | Al | Si | Fe | Cr | Mn | |
Al-20Si-10Fe-6Cr (MA + SPS) | ||||||
1 | 96.5 | 0.8 | 1.8 | 0.9 | - | α-Al |
2 | 97.2 | 0.9 | 1.2 | 0.7 | - | α-Al |
3 | 76.2 | 10.0 | 9.0 | 4.8 | - | Al15(Fe,Cr)3Si2 |
4 | 77.5 | 9.1 | 8.7 | 4.7 | - | Al15(Fe,Cr)3Si2 |
Al-20Si-10Fe-6Mn (MA + SPS) | ||||||
1 | 96.5 | 1.4 | 1.3 | - | 0.8 | α-Al |
2 | 96.0 | 0.9 | 1.7 | - | 1.4 | α-Al |
3 | 72.7 | 11.8 | 12.2 | - | 3.3 | Al15(Fe,Mn)3Si2 |
4 | 76.1 | 9.4 | 10.4 | - | 4.1 | Al15(Fe,Mn)3Si2 |
Alloy | As-Prepared (LT) | Annealed at 400 °C/100 h (LT) | At 400 °C | ||||||
---|---|---|---|---|---|---|---|---|---|
HV5 | CS | CYS a | HV5 | CS | CYS a | HV5 b | CSb | CYS | |
Al-20Si-10Fe-6Cr | 380 ± 7 | 869 | - | 350 ± 10 | 870 | - | - | - | 409 |
Al-20Si-10Fe-6Mn | 320 ± 6 | 887 | - | 312 ± 7 | 865 | - | - | - | 232 |
Al-12Si-1Cu-1Mg-1Ni | 121 ± 11 | 680 | 430 | 63 ± 8 | 498 | 180 | - | - | 100 |
Material (Preparation) | Element (wt %) | |||||||||
---|---|---|---|---|---|---|---|---|---|---|
Ca | Cr | Cu | Fe | Mg | Mn | Ni | Si | Ti | Al | |
Al-20Si-10Fe-6Cr (MA + SPS) | - | 5.8 | - | 10.4 | - | - | - | 20.3 | - | Bal. |
Al-20Si-10Fe-6Mn (MA + SPS) | - | 0.3 | - | 10.1 | - | 6.1 | - | 20.2 | - | Bal. |
Al-12Si-1Cu-1Mg-1Ni (cast, T6 heat-treated) | 0.1 | 0.1 | 1.2 | 0.2 | 1.0 | 0.2 | 0.9 | 11.8 | 0.1 | Bal. |
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Průša, F.; Bláhová, M.; Vojtěch, D.; Kučera, V.; Bernatiková, A.; Kubatík, T.F.; Michalcová, A. High-Strength Ultra-Fine-Grained Hypereutectic Al-Si-Fe-X (X = Cr, Mn) Alloys Prepared by Short-Term Mechanical Alloying and Spark Plasma Sintering. Materials 2016, 9, 973. https://doi.org/10.3390/ma9120973
Průša F, Bláhová M, Vojtěch D, Kučera V, Bernatiková A, Kubatík TF, Michalcová A. High-Strength Ultra-Fine-Grained Hypereutectic Al-Si-Fe-X (X = Cr, Mn) Alloys Prepared by Short-Term Mechanical Alloying and Spark Plasma Sintering. Materials. 2016; 9(12):973. https://doi.org/10.3390/ma9120973
Chicago/Turabian StylePrůša, Filip, Markéta Bláhová, Dalibor Vojtěch, Vojtěch Kučera, Adriana Bernatiková, Tomáš František Kubatík, and Alena Michalcová. 2016. "High-Strength Ultra-Fine-Grained Hypereutectic Al-Si-Fe-X (X = Cr, Mn) Alloys Prepared by Short-Term Mechanical Alloying and Spark Plasma Sintering" Materials 9, no. 12: 973. https://doi.org/10.3390/ma9120973