Effects of ultrasonic treatment on microstructure and mechanical properties of semisolid Sn-52Bi alloy
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- 作者：Yongjun Hu 胡永俊 ; Huiting Zheng 郑辉庭
- 关键词：semisolid ; Sn ; 52Bi ; ultrasonic treatment ; microstructure ; mechanical properties
- 刊名：Journal of Wuhan University of Technology--Materials Science Edition
- 出版年：2016
- 出版时间：October 2016
- 年：2016
- 卷：31
- 期：5
- 页码：1063-1067
- 全文大小：860 KB
- 刊物类别：Chemistry and Materials Science
- 刊物主题：Chemistry
Materials Science
Chinese Library of Science - 出版者：Wuhan University, co-published with Springer
- ISSN：1993-0437
- 卷排序：31
文摘
The effects of ultrasonic vibration temperature on the microstructure of semisolid Sn-52Bi alloy and mechanical properties were investigated. The results show that the microstructure and mechanical properties are improved obviously after the ultrasonic treatment. Nearly round and uniformly distributed primary Sn phase particles were obtained under the cavitation and acoustic streaming caused by ultrasonic treatment. The best effects of ultrasonic treatment on microstructure and mechanical properties were obtained with the ultrasonic vibration for 120 s at 140 °C. The elongation of semisolid Sn-52Bi alloy treated by ultrasonic vibration for 120 s at 140 °C was 42% and increased by 156.09% compared to conventional liquid casting Sn-52Bi alloy without ultrasonic vibration. It is a feasible and effective method to adopt the semisolid metal forming technology assisted with ultrasonic vibration to improve the ductility of Sn-Bi alloys.