Microstructure and mechanical properties of magnesium composites prepared by spark plasma sintering technology
Spark plasma sintering (SPS) technology was used to determine the appropriate conditions for SPS sintering of commercially pure magnesium as well as the magnesium alloy AZ31. It was found that the sintering temperatures of 585 ◦C and 552 ◦C were the most suitable sintering temperatures for the magne...
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| Main Authors: | , , , |
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| Format: | Article |
| Published: |
Elsevier
2011
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| Subjects: | |
| Online Access: | http://dx.doi.org/10.1016/j.jallcom.2011.02.153 http://dx.doi.org/10.1016/j.jallcom.2011.02.153 |
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| Summary: | Spark plasma sintering (SPS) technology was used to determine the appropriate conditions for SPS sintering
of commercially pure magnesium as well as the magnesium alloy AZ31. It was found that the sintering
temperatures of 585 ◦C and 552 ◦C were the most suitable sintering temperatures for the magnesium and
the AZ31 alloy, respectively. Magnesium matrix and AZ31 alloy matrix composites reinforced with SiC
particles were then successfully fabricated by the SPS method at sintering temperatures of 585 ◦C and
552 ◦C, respectively. A uniform distribution of SiC particles was observed along the boundary between
matrix particles. The mechanical properties, i.e. hardness and tensile strength increased with increasing
SiC content up to 10 wt%. However, when the SiC content was larger than 10 wt%, the tensile strength
decreased due to the agglomeration of SiC particles. The agglomeration of SiC particles was found to lead
to the degradation of the interfacial bonding strength between matrix and reinforcement. |
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