超声电磁复合场对AZ31B镁合金铸轧板带组织性能的影响

中国机械工程 ›› 2010, Vol. 21 ›› Issue (23): 2865-2867,2876.

超声电磁复合场对AZ31B镁合金铸轧板带组织性能的影响

谭湘夫1,2;毛大恒2;仇灵2;张生芳3

1.湖南理工学院，岳阳，414000

2.中南大学，长沙，410083

3.上海神火铝箔有限公司，上海，201319

出版日期:2010-12-10 发布日期:2010-12-15
基金资助:
国家重点基础研究发展计划(973计划)资助项目(2007CB613706)；国家自然科学基金资助项目(50974139)；湖南省科技计划资助项目(2010FJ4142)；湖南省教育厅科学研究项目(10C0763)
National Program on Key Basic Research Project (973 Program)（No. 2007CB613706）;

National Natural Science Foundation of China（No. 50974139）;

Hunan Provincial Science and Technology Program ( No. 2010FJ4142);
Hunan Provincial Science Research Program of Ministry of Education of China（No. 10C0763）

Effect of Ultrasound and Electromagnetic Field on Microstructure of Cast-rolling Magnesium Strip

Tan Xiangfu1,2;Mao Daheng2;Qiu Ling2;Zhang Shengfang3

1.Hunan Institute of Science and Technology, Yueyang,Hunan,414000

2.Central South University, Changsha, 410083

3.Shanghai Shenhuo Aluminum Foil Co., Ltd., Shanghai,201319

Online:2010-12-10 Published:2010-12-15
Supported by:

National Program on Key Basic Research Project (973 Program)（No. 2007CB613706）;

National Natural Science Foundation of China（No. 50974139）;

Hunan Provincial Science and Technology Program ( No. 2010FJ4142);
Hunan Provincial Science Research Program of Ministry of Education of China（No. 10C0763）

摘要/Abstract

摘要：

利用水平式双辊铸轧机进行了AZ31B镁合金超声波电磁复合场板带的铸轧试验，成功试制出了厚3mm、宽200mm的AZ31B镁合金铸轧板，研究了超声波电磁复合场对铸轧镁合金板带金相组织性能的影响。结果表明，在AZ31B镁合金铸轧过程中施加超声波电磁复合场能够使晶粒细化，组织更加均匀，平均晶粒尺寸由不加超声波电磁复合场时的30~60μm减小至10~20μm;板带坯力学性能也得到有效改善，抗拉强度、屈服强度和延伸率分别提高了23.6%、43.2%、107.2%，硬度提高了10%。在此基础上探讨了超声波空化效应及电磁效应对铸轧镁合金板带组织细化的作用机制。

关键词:

镁合金铸轧, 超声波电磁场, 晶粒尺寸, 力学性能



Abstract:

Experimental study on ultrasonic and electromagnetic roll-casting of AZ31B magnesium alloy was carried out using a self designed and installed twin roll continuous horizontal caster. 3mm thickness and 200mm width of AZ31B magnesium alloy casting strips were produced successfully. The results show that the ultrasonic and electromagnetic field is transferred into roll-casting zone and results in a great decrease of the grain size,the average grain size has decreased to 10～20μm from 30～60μm; and also improved the mechanics properties of the AZ31B magnesium alloy sheet, the tensile strength and yield strength and elongation and hardness are improved by 23.6% and 43.2% and 107.2% and 10% respectively. On this basis, the mechanism of grain refinement during cast-rolling process with ultrasonic cavitation and electromagnetic field effect were discussed.

Key words:

cast-rolling magnesium, ultrasound and electromagnetic field, grain size;mechanics property

中图分类号:

谭湘夫, 毛大恒, 仇灵, 张生芳.

超声电磁复合场对AZ31B镁合金铸轧板带组织性能的影响

[J]. 中国机械工程, 2010, 21(23): 2865-2867,2876.

TAN Xiang-Fu, MAO Da-Heng, CHOU Ling, ZHANG Sheng-Fang.

Effect of Ultrasound and Electromagnetic Field on Microstructure of Cast-rolling Magnesium Strip

[J]. China Mechanical Engineering, 2010, 21(23): 2865-2867,2876.

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