Abstract
The 15 vol.% micron SiC particle (SiCp)-reinforced AZ31B magnesium matrix composite (AZ31B-SiCp) prepared with semisolid stirring-assisted ultrasonic vibration was subjected to a multi-step process. The influence of the multi-step processing route on the microstructure and mechanical properties of the AZ31B-SiCp was investigated. For comparison, the monolithic AZ31B alloy was also processed under the same conditions. The results showed that the grain sizes of the AZ31B alloy and the AZ31B-SiCp were gradually decreased with increasing the processing step. Compared with the AZ31B-SiCp, the grain size of the AZ31B alloy was much larger, and the grain size distribution was inhomogeneous at the same processing condition. The particles of the AZ31B-SiCp were dispersed uniformly through the multi-step processing. Moreover, the tensile properties of the materials were gradually improved with increasing the processing step. In particular, the strength of AZ31B-SiCp and the ductility of AZ31B alloy improved significantly based on the room-temperature tensile test results.
| Original language | English |
|---|---|
| Pages (from-to) | 4608-4616 |
| Number of pages | 9 |
| Journal | Journal of Materials Engineering and Performance |
| Volume | 25 |
| Issue number | 10 |
| DOIs | |
| State | Published - 1 Oct 2016 |
| Externally published | Yes |
Keywords
- magnesium matrix composite
- microstructure
- multi-step process
- room-temperature tensile properties
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