摘要
探讨了机械振动工艺对一种新型铸造铝合金凝固组织和力学性能的影响。结果表明,当振动工艺采用振动频率30 HZ,振动时间为60 s时,振动效果最佳,合金可获得晶粒细小的凝固组织;经固熔时效处理后,合金的抗拉强度σb为459 Mpa,延伸率5δ为6.0%.从而可提高新型铸造铝合金的综合力学性能,满足实际生产的需求。
The effect of mechanical vibration on the microstructure and property of a new high strength casting aluminum alloy was discussed. The results show that in the condition of using the vibration with different frequency and different time in the process of solidifying, the small crystalline grains can be achieved. While the vibration frequency is 30Hz continuing 60s, as a result of the fine grains, the microstructure of the alloy and the overall properties improve greatly. The new casting aluminum alloy with high strength meeting the needs of practical production is available.
出处
《贵州大学学报（自然科学版）》
2009年第1期80-81,92,共3页
Journal of Guizhou University:Natural Sciences
基金
中国铝业公司项目(编号:2005KJA05)
贵州省科技计划项目(编号:2007-6003)
关键词
铸造铝合金
机械振动
微观组织
力学性能
high-strength casting aluminum alloy
mechanical vibration
mechanical property
microstructure
