Research of Ultrasound and Electromagnetic Field on the Microstructure of Cast-Rolling Magnesium Strip

Abstract:

Experimental study on ultrasonic and electromagnetic roll-casting of magnesium alloy was carried out using a self designed and installed twin roll continuous horizontal caster . 2.5mmthickness and 200mmbreadth 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 result in a great decrease of the grain size,the average grain size has decreased to 10～15μm from 60～70μm; and also improved the mechanic properties of the AZ31B magnesium alloy sheet, the tensile strength and yield strength and elongation and hardness are improved by 25%and 44.4% and 120.7% and 12%respectively. On this basis, the mechanism of grain refinement during cast-rolling process with ultrasonic cavitation and electromagnetic field effect are discussed.

• Periodical: Advanced Materials Research (Volumes 476-478)
• Pages: 426-429
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.476-478.426
• Online since: February 2012
• Authors: Xiang Fu Tan, Da Heng Mao, Jian Ping Li
• Keywords: AZ31B, Board Tape Billet, Cast-Rolling Magnesium, Ultrasound and Electromagnetic Field

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