Friction Stir Welding Effect on Transverse Rigidity and Sound Transmission Characteristics of AZ31B Magnesium Alloy

• Published in: Transactions of Tianjin University Vol. 21; no. 1; pp. 64 - 68
• Main Author: 罗智 郝志勇 倪丁瑞 郑旭
• Format: Journal Article
• Language: English
• Published: Heidelberg Tianjin University 2015; Department of Energy Engineering, Zhejiang University, Hangzhou 310027, China%Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China
• Subjects: AZ31B镁合金; Engineering; Humanities and Social Sciences; Mechanical Engineering; multidisciplinary; Science; 传输特性; 基体材料; 声音; 搅拌摩擦焊; 摩擦搅拌焊接; 横向刚度; 焊接参数; AZ31B magnesium alloy; friction stir welding; transverse rigidity; sound transmission loss
• ISSN: 1006-4982; 1995-8196
• DOI: 10.1007/s12209-015-2370-7

AZ31B magnesium alloy was subjected to friction stir welding with various welding parameters. The equivalent Young＇s moduli of the friction stir welded samples and the base material were obtained by the three-point method, and their transverse rigidities were obtained as well. Furthermore, the sound transmission characteristics of those samples were experimentally studied by four-microphone impedance tube method. The experimental results indicate that the transverse rigidities of the friction stir welded samples were only 79%, 83% and 92% of those of the base material, respectively. The sound transmission losses of the processed samples were also lower, which was largely due to the reduction of transverse rigidities induced by the decrease of equivalent Young＇s moduli.