Improving Densification and Mechanical Properties of FeAl/TiC Composites by Addition of Ni

来源 :Journal of Materials Science & Technology | 被引量 : 0次 | 上传用户:yudanlei198
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FeAl/TiC composites were fabricated by hot pressing blended elemental powders. The effects of Ni-doping on thedensification and mechanical properties of the composites were studied. Results show that the density of the composites decreases with the content of TiC increasing, and the addition of Ni significantly improves the densificationprocess by enhancing mass transfer in the bonding phase. The mechanical properties of the composites are closelyrelated with their porosity. Besides increasing the density of the composites, the addition of Ni improves the mechanical properties by other three effects: solution-strengthening the bonding phase, strengthening the FeAI-TiC interfaceand increasing ductile fracture in FeAl phase. The effects of Ni-doping on the condensation and mechanical properties of the composites were studied. Results show that the density of the composites decreases with the content of TiC increasing, and the addition of Ni significantly improves the densification process by enhancing mass transfer in the bonding phase. The mechanical properties of the composites are closely linked with the porosity. the bonding phase, strengthening the FeAI-TiC interface and increasing ductile fracture in FeAl phase.
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