Numerical Simulation and Experimental Studies of Gas Pressure Infiltration Al-356/SiC Composites
In this study, the filling process, solidification parameters, temperature distribution, and residual stress distribution of gas pressure-infiltrated Al-356/SiC composites were investigated through simulation and experiment. In addition, a series of orthogonal tests was also carried out to precisely...
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2022-12-01
|
| Series: | Metals |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2075-4701/12/12/2150 |
| _version_ | 1797456359162118144 |
|---|---|
| author | Yanni Gong Abdul Malik Yangwei Wang Sijia Feng Denghui Zhao Chunyuan Yuan |
| author_facet | Yanni Gong Abdul Malik Yangwei Wang Sijia Feng Denghui Zhao Chunyuan Yuan |
| author_sort | Yanni Gong |
| collection | DOAJ |
| description | In this study, the filling process, solidification parameters, temperature distribution, and residual stress distribution of gas pressure-infiltrated Al-356/SiC composites were investigated through simulation and experiment. In addition, a series of orthogonal tests was also carried out to precisely demonstrate the preheating temperature, infiltration temperature, and infiltration pressure. After a thorough analysis, the orthogonal tests revealed that the optimal process parameters are as follows: the SiC preheating temperature is 550 °C, the infiltration temperature of the Al-356 alloy is 620 °C, and the infiltration pressure is 8 MPa. The simulation results revealed that pressure had a sharp decrease of ~87% during filling, and the critical pressure was ~0.12 MPa. The velocity decreased with the increase in the filling time, and the average velocity was ~2.60 ms<sup>−1</sup>. Feasible analysis suggested that critical pressure is ~0.11 MPa and average velocity is ~4.20 ms<sup>−1</sup>; this difference is attributed to apparent velocity and the Kozeny constant. In the solidification process, shrinkage porosity appeared in the centers of the composites, which is evident with scanning electron microscopy. Moreover, the stress concentration of 171.3 MPa appeared in the composite region connected with the runner, which is the cause of the nucleation of the crack. However, based on the optimum orthogonal parameters and simulative results, the stress concentration was reduced, and crack-free and porosity-free composites were achieved. |
| first_indexed | 2024-03-09T16:06:39Z |
| format | Article |
| id | doaj.art-f06f2e457af849ce9db28e70c294289b |
| institution | Directory Open Access Journal |
| issn | 2075-4701 |
| language | English |
| last_indexed | 2024-03-09T16:06:39Z |
| publishDate | 2022-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Metals |
| spelling | doaj.art-f06f2e457af849ce9db28e70c294289b2023-11-24T16:41:45ZengMDPI AGMetals2075-47012022-12-011212215010.3390/met12122150Numerical Simulation and Experimental Studies of Gas Pressure Infiltration Al-356/SiC CompositesYanni Gong0Abdul Malik1Yangwei Wang2Sijia Feng3Denghui Zhao4Chunyuan Yuan5School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, ChinaSchool of Mechanical Engineering, Dongguan University of Technology, Dongguan 523808, ChinaSchool of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, ChinaSchool of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, ChinaChina Ordnance Industrial Standardization Research Institute, Beijing 100089, ChinaSchool of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, ChinaIn this study, the filling process, solidification parameters, temperature distribution, and residual stress distribution of gas pressure-infiltrated Al-356/SiC composites were investigated through simulation and experiment. In addition, a series of orthogonal tests was also carried out to precisely demonstrate the preheating temperature, infiltration temperature, and infiltration pressure. After a thorough analysis, the orthogonal tests revealed that the optimal process parameters are as follows: the SiC preheating temperature is 550 °C, the infiltration temperature of the Al-356 alloy is 620 °C, and the infiltration pressure is 8 MPa. The simulation results revealed that pressure had a sharp decrease of ~87% during filling, and the critical pressure was ~0.12 MPa. The velocity decreased with the increase in the filling time, and the average velocity was ~2.60 ms<sup>−1</sup>. Feasible analysis suggested that critical pressure is ~0.11 MPa and average velocity is ~4.20 ms<sup>−1</sup>; this difference is attributed to apparent velocity and the Kozeny constant. In the solidification process, shrinkage porosity appeared in the centers of the composites, which is evident with scanning electron microscopy. Moreover, the stress concentration of 171.3 MPa appeared in the composite region connected with the runner, which is the cause of the nucleation of the crack. However, based on the optimum orthogonal parameters and simulative results, the stress concentration was reduced, and crack-free and porosity-free composites were achieved.https://www.mdpi.com/2075-4701/12/12/2150Al-356/SiCProCASTgas pressure infiltrationnumerical simulationSEM |
| spellingShingle | Yanni Gong Abdul Malik Yangwei Wang Sijia Feng Denghui Zhao Chunyuan Yuan Numerical Simulation and Experimental Studies of Gas Pressure Infiltration Al-356/SiC Composites Metals Al-356/SiC ProCAST gas pressure infiltration numerical simulation SEM |
| title | Numerical Simulation and Experimental Studies of Gas Pressure Infiltration Al-356/SiC Composites |
| title_full | Numerical Simulation and Experimental Studies of Gas Pressure Infiltration Al-356/SiC Composites |
| title_fullStr | Numerical Simulation and Experimental Studies of Gas Pressure Infiltration Al-356/SiC Composites |
| title_full_unstemmed | Numerical Simulation and Experimental Studies of Gas Pressure Infiltration Al-356/SiC Composites |
| title_short | Numerical Simulation and Experimental Studies of Gas Pressure Infiltration Al-356/SiC Composites |
| title_sort | numerical simulation and experimental studies of gas pressure infiltration al 356 sic composites |
| topic | Al-356/SiC ProCAST gas pressure infiltration numerical simulation SEM |
| url | https://www.mdpi.com/2075-4701/12/12/2150 |
| work_keys_str_mv | AT yannigong numericalsimulationandexperimentalstudiesofgaspressureinfiltrational356siccomposites AT abdulmalik numericalsimulationandexperimentalstudiesofgaspressureinfiltrational356siccomposites AT yangweiwang numericalsimulationandexperimentalstudiesofgaspressureinfiltrational356siccomposites AT sijiafeng numericalsimulationandexperimentalstudiesofgaspressureinfiltrational356siccomposites AT denghuizhao numericalsimulationandexperimentalstudiesofgaspressureinfiltrational356siccomposites AT chunyuanyuan numericalsimulationandexperimentalstudiesofgaspressureinfiltrational356siccomposites |