Numerical Modelling and Simulation of Heat Transfer during Magnetic Moulding of Al/SiCp Metal Matrix Composites
Abstract
:1. Introduction
2. Experimental Validation Setup
2.1. Magnetic Moulding Setup
2.2. Material Modelling
Properties | Al/SiCp | Grade 410 SS [15,16] | Olivine Sand | Grade 304 L SS [15,16] | Copper |
---|---|---|---|---|---|
Density (kg/m3) | 2770 | 7880 | 3150 | 8000 | 8960 |
Thermal conductivity, K (W/m K) | 200 | 25 | 7.5 | 16.2 | 400 |
Specific heat at constant pressure, Cp (J/kg K) | 775 | 460 | c.f Figure 2 | 500 | 385 |
Relative permeability | 1 | 750 | - | 1.008 | 1 |
Electrical conductivity | 1.11 × 107 | 1.74 × 107 | - | 1.37 × 107 | 6 × 107 |
Porosity | - | 0.4804 | 0.440 | - | - |
2.3. Theoretical Formulation
2.3.1. Magnetic Field
2.3.2. Heat Transfer
2.3.3. Porous Media
2.3.4. Phase Change Medium
2.4. Testing and Characterization
3. Results and Discussion
- The temperature distribution is uniform throughout the EPS foam domain where the molten aluminium is poured.
- The heat loss due to radiation around the cast setup is negligible.
- The thermal expansion of the cast being produced is very small and can be neglected in the heat transfer equation.
- Axisymmetric conditions apply for the whole magnetic moulding setup (the corresponding equations were used while solving the model in the commercial software COMSOL).
- The material is homogeneous and isotropic.
- The Fuller’s earth coating on the EPS pattern is very thin and can be neglected.
3.1. Experimental Results
3.2. Effect of Magnetic Field and Flux Lines
3.3. Effect of Temperature at the Locations A, B, C and D
3.4. Effect of Phase Transition of Al/SiCp
3.5. Microstructure and Hardness Test
3.6. Dry Wear Test
3.7. Impact Toughness
3.8. Surface Roughness
4. Conclusions
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Acknowledgments
Conflicts of Interest
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Diameter (mm) | V (mm3) | Porosity | Porosity in % |
---|---|---|---|
0.18 | 0.5218 | 0.4782 | 47.82 |
0.60 | 0.5196 | 0.4804 | 48.04 |
1.00 | 0.5245 | 0.4755 | 47.55 |
Description | Value |
---|---|
Minimum element quality | 0.7583 |
Average element quality | 0.9847 |
Triangular elements | 9277 |
Edge elements | 490 |
Vertex elements | 16 |
Maximum element size | 0.00154 mm |
Minimum element size | 3.08 × 10−6 mm |
Curvature factor | 0.2 |
Predefined size | Extremely fine |
S. No. | Process | Indentation Layer | Trial 1 | Trial 2 | Trial 3 | Trial 4 | Average (HB) |
---|---|---|---|---|---|---|---|
1 | Sand Casting | Outer Layer | 9 | 11 | 9.8 | 10.2 | 10 |
2 | Magnetic Moulding | Outer Layer | 17 | 16 | 17 | 17 | 16.75 |
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Chandran, A.P.; Ravimanalan, S.; Bennet, A.R. Numerical Modelling and Simulation of Heat Transfer during Magnetic Moulding of Al/SiCp Metal Matrix Composites. Processes 2022, 10, 2144. https://doi.org/10.3390/pr10102144
Chandran AP, Ravimanalan S, Bennet AR. Numerical Modelling and Simulation of Heat Transfer during Magnetic Moulding of Al/SiCp Metal Matrix Composites. Processes. 2022; 10(10):2144. https://doi.org/10.3390/pr10102144
Chicago/Turabian StyleChandran, Arun Prakash, Suraj Ravimanalan, and Anand Ronald Bennet. 2022. "Numerical Modelling and Simulation of Heat Transfer during Magnetic Moulding of Al/SiCp Metal Matrix Composites" Processes 10, no. 10: 2144. https://doi.org/10.3390/pr10102144