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| 超声波导入时初始温度对铝-硅合金组织的影响 |
| Influence of Starting Temperature of Ultrasonic Treatment on the Structure of Al-Si Alloy |
| Received:March 11, 2011 Revised:September 10, 2011 |
| DOI： |
| 中文关键词: 超声波处理 Al-20%Si合金 微观组织 |
| 英文关键词: ultrasonic treatment Al-20%Si alloy microstructure |
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| 中文摘要: |
| 采用高能超声波对Al-20%Si合金进行处理，控制Al-20%Si合金熔体温度在620～680 ℃，研究合金组织随超声波导入时熔体初始温度的变化规律。实验表明，随着导入超声波时熔体温度的升高，初晶硅形貌由粗大的板片状逐渐变成细小的颗粒状，超声波处理熔体的温度控制在660 ℃左右时，初晶硅的组织细小、圆整度高、分布均匀。 |
| 英文摘要: |
| Influence rules of the microstructures of Al-20%Si alloy treated by high-intensity ultrasonic in the starting temperature ranges between 620 ℃ and 680 ℃ were studied. The mechanism of microstructural refinement for the ultrasonic treated alloy was also discussed. With the rise of starting temperature the morphology of primary crystal silicon changed by a thick sheet into small particles gradually. The results indicated that finer primary phase could be obtained when the starting temperature was at about 660 ℃. |
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