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| Analysis of microstructure and mechanical properties of siliceous rock /5052
composites for construction by jet forming |
| JIANG Huaguo1，LI Ming2 |
| 1Luzhou Vocational and Technical College School of Architectural Engineering，Luzhou 646000，China；
2Henan Institute of Building Science Co.，Ltd.，Zhengzhou 450064，China |
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Abstract Siliceous rock particles were used as the reinforcing body，and the siliceous rock/aluminum-based composite
material was prepared by jet forming process. The results show that a large number of dispersed siliceous
rock particles are produced in the aluminum matrix，and the particles of different particle sizes can be captured efficiently
to achieve uniform distribution. The siliceous rock particles are in a good Mosaic state with the aluminum
matrix，and a large number of dislocations occur close to the interface，and obvious dislocations occur at the interface
between the matrix and the particles. The content of Si at the transition zone is small and Al is obviously increased.
When the siliceous rock particles are added into the alloy，the mechanical properties of the aluminum-matrix
composites are significantly improved，and the tensile strength and elongation are significantly increased，the
increase proportion is more than 10%. The fracture morphology of the alloy is characterized by ductile fracture，
with flat structure and a large number of dimples.
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Received: 08 February 2020
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2020, Vol. 30 
