Abstract
In the present research work, the effect of extrusion temperature from 480 to 560 °C on the microstructure and mechanical behavior of the SiCnw/2024Al composite (15 vol.%) has been explored. It has been found that extrusion at higher temperature (above 520 °C) was beneficial for the densification of the composite, while the residual average length and alignment of the SiC nanowires were also increased with the extrusion temperature. Moreover, higher extrusion temperature was helpful for the mechanical strength of the SiCnw/2024Al composite, and the peak-aged SiCnw/2024Al composite extruded at 560 °C revealed the highest strength (709.4 MPa) and elastic modulus (109.8 GPa).
Highlights
Composites materials reinforced with nano-phases, such as ceramic nano-particles [1,2], carbonous nano-phase (CNT) [3,4] and graphene [5,6] have been widely explored
In order to show the effectof of the extrusion treatment on the distribution of pores in the composites, optical morphologies ofSiCnw/2024Al the extrusioncomposite treatment extruded on the distribution pores in thehave composites, optical of at differentoftemperature been shown in morphologies
The effect extrusion temperature from 480 to 560 °Cbyonpressure the microstructure methods have been investigated, and following conclusions have been obtained: and mechanical behavior of the 15 vol.% SiCnw/2024Al composite prepared by pressure infiltration methods have been investigated, andporosity following have been obtained: 1
Summary
Composites materials reinforced with nano-phases, such as ceramic nano-particles [1,2], carbonous nano-phase (CNT) [3,4] and graphene [5,6] have been widely explored. It has been reported that the SiC nanowires could enhance the strength and toughness of polymer [9] and ceramic matrix composites [10]. Our research group reported that the microstructure and mechanical behavior of SiC nanowires reinforced pure Al and 6061Al matrix composites [15,16,17,18,19,20]. SiCnw/6061Al composites could be enhanced by the extrusion treatment regardless of SiC nanowires. Theratio strength of pure matrix composites [27] found that the extrusion temperature In the present of research work, 15 vol.% SiCnw/2024Al composite been hot-extruded in the temperature range from 480 to 560 °C, and the effect of the extrusion temperature on the
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