Materials Reports  2020, Vol. 34 Issue (Z2): 371-375 |
| METALS AND METAL MATRIX COMPOSITES |
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| Effect of Pressureless in Filtration Process on Microstructures and Mechanical Properties of Al2O3/Al-Mg-Si Composites |
| ZANG Hengbo1,2, QIAO Jing3
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1 The First Military Agency of the Naval Armaments Department in Harbin,Harbin 150060,China
2 School of Coast Guard, Navy Aviation University, Yantai 264001, China
3 School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150006,China |
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Abstract Al2O3/Al-Mg-Si composites was prepared by pressureless infiltration method. Based on the orthogonal test design, effect of process para-meters, such as infiltration temperature, infiltration time and particle size of reinforcement on the microstructure and mechanical properties of the composites were systematically studied. The microstructure analysis results show that the Al2O3 particles in the composite are evenly distributed in the matrix, and the interfacial reaction product MgAl2O4 exists in the composite. The analysis results of orthogonal design factors show that the maximum hardness of the composites in the orthogonal experimental group is 333.9 MPa, and the maximum bending strength is 317.0 MPa. The size of the reinforcement particle has the greatest influence on the hardness of the composite, followed by the infiltration time and the infiltration temperature. The infiltration time has the greatest influence on the flexural strength of the composite, followed by the infiltration temperature and the reinforcement particle size.
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Published: 08 January 2021
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| About author:: Hengbo Zang, in 2006, he graduated from Harbin Engineering University with a major in thermal energy and power engineering. In 2014, he graduated from Jilin University with a major in materials processing enginee-ring and obtained a master's degree in engineering. He is currently an engineer of the first military equipment room of the Naval Equipment Department in Harbin. |
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