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Effect of ultrasonic field treatment on degassing of 2024 alloy
Authors:Jia  Zheng  Yu  Bing  Lan  Qing  Wang  Tong  Fu  Li  Ma  Yu-lin  Le   Qi-chi  Cui   Jian-zhong
Affiliation:1. College of Mechanical Engineering, Shenyang University, Shenyang, 110044, China;2. Key Laboratory of Electromagnetic Processing of Materials, Ministry of Education, Northeastern University, Shenyang, 110819, China
Abstract:

The 2024 aluminum alloy was prepared with different ultrasonic processes. Effects of ultrasonic treatment parameters including ultrasonic power, treatment time, treatment temperature, and frequency resonance, as well as C2Cl6 degasser on degassing of the 2024 aluminum alloy were investigated. Results indicate that increasing ultrasonic power at the same ultrasonic treatment time can improve the degassing effect. The optimum degassing efficiency can be obtained under the resonant ultrasound condition. With the combination of 1% C2Cl6 addition and 150 W ultrasonic treatment for 40 s, the hydrogen content of the alloy is decreased by 52.9%. At the same time, the tensile strength and elongation are increased by 28.3% and 92.3%, respectively, and the yield strength is slightly increased by 6.7%. The degassing mechanism is also discussed.

Keywords:ultrasonic degassing  C2Cl6 degasser  hydrogen content  tensile properties  
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