超声振动对Mg-8Li-3Al合金凝固组织及性能的影响

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Bibliographic Details
Published in中国有色金属学报：英文版 Vol. 21; no. 6; pp. 1241 - 1246
Main Author 姚磊 郝海 季首华 房灿烽 张兴国
Format Journal Article
LanguageEnglish
Published 2011
Subjects
Mg-8Li-3Al合金
耐腐蚀性
超声振动
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Bibliography:Mg-8Li-3A1 alloy; ultrasonic vibration; corrosion resistance
YAO Lei, HAO Hai, JI Shou-hua, FANG Can-feng, ZHANG Xing-guo School of Materials Science and Engineering, Dalian University of Technology, Dalian 116024, China
43-1239/TG
Ultrasonic vibration was introduced into the Mg-8Li-3A1 alloy melt during its solidification process. The microstructure, corrosion resistance and mechanical properties of the Mg-8Li-3A1 alloy under ultrasonic vibration were investigated. The experiment results show that the morphology of a phase is modified from coarse rosette-like structure to fine globular one with the application of ultrasonic vibration. The fine globular structure is obtained especially when the power is 170 W, and the refining effect also gets better with prolonging the ultrasonic treatment time. The corrosion resistance of the alloy with 170 W of ultrasonic vibration for 90 s is improved apparently compared with the alloy without ultrasonic vibration. The mechanical properties of alloys with ultrasonic vibration are also both improved apparently. The tensile strength and elongation of alloy improve by 9.5% and 45.7%, respectively, with 170 W of ultrasonic treatment for 90 s.
ISSN:1003-6326