The superior ductility of fine SiCp/Al2014 composites after extrusion
This paper studied the effect of extrusion on the microstructures and tensile properties of 4 vol.% 5 μm SiCp/Al2014 composites fabricated by stir casting. It has been found that extrusion could refine the α-Al grains, increase the distributed homogeneity of SiC particles, decrease the porosity of t...
Main Authors: | , , , |
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Format: | Article |
Language: | English |
Published: |
De Gruyter
2017-03-01
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Series: | Science and Engineering of Composite Materials |
Subjects: | |
Online Access: | https://doi.org/10.1515/secm-2014-0461 |
Summary: | This paper studied the effect of extrusion on the microstructures and tensile properties of 4 vol.% 5 μm SiCp/Al2014 composites fabricated by stir casting. It has been found that extrusion could refine the α-Al grains, increase the distributed homogeneity of SiC particles, decrease the porosity of the composites, and improve the interfacial bonding strength. The tensile properties, especially the ductility, of the fine SiCp/Al2014 composites were significantly improved by extrusion. Compared with the as-cast 4 vol.% 5 μm SiCp/Al2014 composites, the yield strength, ultimate tensile strength, and fracture strain of the extruded composites increased from 242 MPa, 367 MPa, and 3.8% to 304 MPa, 530 MPa, and 11.2%, which were increased by 25.6%, 44.4%, and 195%, respectively. |
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ISSN: | 0792-1233 2191-0359 |