Microstructures of in-situ TiB₂/7055Al Composites by the Ultrasonic and Magnetic Coupled Field

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• 作者：Jiao Lei ; Zhao Yutao ; ^{yutaozhao@ujs.edu.cn" class="auth_mail} ; Wu Yue ; Chen Dengbin ; Wang Xiaolu
• 关键词：ultrasonic and magnetic coupled field ; in-situ synthesis ; aluminum matrix composites ; microstructure
• 刊名：Rare Metal Materials and Engineering
• 出版年：January 2014
• 年：2014
• 卷：43
• 期：1
• 页码：6-10
• 全文大小：2136 K

文摘

The TiB₂/7055Al Nano-composites were fabricated under the ultrasonic and magnetic coupled field. The results show that TiB₂ particles in the coupled field have a small size, with 80∼100 nm, a ball shape, a uniform distribution and a reaction to generate TiB₂ particles with high efficiency. When the ultrasonic power is 0.8 kW and exciting current of magnetic field is 200 A, frequency is 5 Hz, approximately 82.4% of TiB₂ reinforcement particles sizes are in range of 0.2∼0.5 渭m, the number of particles whose sizes are in the range of 0.8∼1.2 渭m reduce to about 1.6%, therefore, the thinning effect is nearly twice as much as generated in a single ultrasonic field of 0.8 kW.