Influence of Sever Plastic Deformation on the Consolidation Behavior of Al-SiC Mixed Powder

Abstract:

Abstract: Oxidized and non-oxidized SiC particulates were mixed with Al powder respectively and the two kinds of mixed powders were consolidated at 250°C by equal channel angular pressing and torsion (ECAP-T), which belongs to severe plastic deformation. The interfacial bondings of as-consolidated composites were characterized by SEM images, corrosion morphology and fracture morphology. The results show that after severe plastic deformation, the interfacial bonding between non-oxidized SiC and Al is a kind of mechanical bonding and the consolidation is not firm enough so that the composite has a weak corrosion resistance and its tensile sample has a brittle fracture. However, the composite containing oxidized SiC has a dense microstructure, high corrosion resistance, ductile fracture due to the metallurgical interface.

• Periodical: Key Engineering Materials (Volume 732)
• Pages: 38-42
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.732.38
• Online since: March 2017
• Authors: Chen Hao Qian, Ping Li, Ke Min Xue*, Hong Li Liu
• Keywords: Consolidation, Corrosion Morphology, Fracture Morphology, Severe Plastic Deformation

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