Effects of ultrasound on the microstructures and mechanical properties of cast-rolling AZ31B magnesium alloy strip

摘要：

The experiment of ultrasonic cast-rolling magnesium strip was carried out on the horizontal twin-roll cast-rolling machine with the ultrasonic pole used in the solidification. The microstructures of ultrasonic and general cast-rolling magnesium strip were characterized. The results showed that the cellular dendrite of the general cast-rolling magnesium strip was coarse, the grain structure was heterogeneous and the average grain diameter was between 50μm~60μm. However, the grain structure became more homogenize after the ultrasonic treatment for cast-rolling magnesium strip, the grain was refined and the average grain diameter was between 20μm~30μm. Besides, the mechanical properties test results show that the tensile strength, yield strength and elongation of the ultrasonic cast-rolling magnesium strip were increased by 22.85％, 49.78％ and 123.06％ than those of the general cast-rolling magnesium strip.

关键词： Ultrasound AZ31B magnesium alloy Cast-rolling Mechanical properties

作者: Li Jianping Hu Jianbing Mao Daheng Zhao Guanzhong

作者单位: College of Mechanical and Electrical Engineering, Central South University,Changsha, Hunan, China,41 College of Mechanical and Electrical Engineering, Central South University, Changsha, Hunan, China,4

会议类型: 国际会议

会议名称: 11th IUMRS International Conference in Asia(第十一届国际材联亚洲材料大会 IUMRS-ICA 2010)

会议地点: 青岛

会议语种:英文

页码: 129-134

在线出版日期: 2010-09-25（万方平台首次上网日期，不代表论文的发表时间）