【摘 要】
：
Unidirectional Tungsten filament (Wf) reinforced pure Al,Al-6Ti-6Nb and SiCp-Al-6Ti-6Nb matrix composites were prepared by hot-pressing in vacuum atmosphere,the
【机 构】
：
Harbin Institute of Technology,Harbin 150001;Central Iron & Steel Research Institute,Beijing 100081
论文部分内容阅读
Unidirectional Tungsten filament (Wf) reinforced pure Al,Al-6Ti-6Nb and SiCp-Al-6Ti-6Nb matrix composites were prepared by hot-pressing in vacuum atmosphere,their microstructure and room temperature mechanical properties were investigated. It was indicated that no reaction products appeared at Wf/Al interfaces in pure Al matrix composites. While, in Wf/Al-6Ti-6Nb and Wf/SiCp-Al-6Ti-6Nb,intermetallic WAl4 interfacial reaction products formed. Much better strengthening effect from W filament was shown in the Wf/Al-6Ti-6Nb and Wf/SiCp-Al-6Ti-6Nb composites than in the pure Al matrix composite. Their strength reached 319 and 339MPa, respectively, with only a small content of Wf(＜5Vol.%). The excellent reinforcement effects could be predominantly attributed to the strong Wf/Al interfacial bonding strength due to the interfacial reaction.
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