Transactions of Materials and Heat Treatment

Title：Study on bidirectional axial compression electromagnetic bulging of 6063 aluminum alloy tube

Authors： Sun Xiaoming1 Ji Yanan2 Wang Shu2 Zhou Nan2 Cui Xiaohui2

Unit： 1.College of Mechanical and Electrical Engineering Central South University 2.Light Alloy Research Institute Central South University

KeyWords： electromagnetic bulging 6063-T6 aluminum alloy bidirectional axial compression deformation profile pressure ratio

ClassificationCode：TG391

year,vol(issue):pagenumber：2023,48(5):31-38

Abstract：

6063 aluminum alloy tube has the advantages of light weight, high specific strength and corrosion resistance, but it is easy to crack during plastic deformation at room temperature. Therefore, two tube electromagnetic bulging methods were adopted, that is, tube bulging without axial compression (scheme 1) and tube bulging with bidirectional rigid drive axial compression (scheme 2). Compared with scheme 1, when the diameter of the driving plate increased to Φ110 mm, the maximum bulging height of tube in scheme 2 increased by 100%. Furthermore, the 3D finite element simulation model of tube electromagnetic bulging was established, and the maximum error between simulation and experimental results was less than 10%. The simulation find that when the circumferential strain of tube middle node in scheme 2 is slightly smaller than that in scheme 1, the thickness strain value is significantly smaller. When the bulging height is close,the thinning rate of tube in scheme 2 is smaller. When the maximum thickness strains of scheme 1 and scheme 2 are similar (close to rupture), the maximum circumferential strain of tube in scheme 2 increases by 75.2%, and the pressure ratio between the end and middle of the tube is 36.95.

Funds：

国家自然科学基金资助项目(52275394)；中南大学高性能复杂制造国家重点实验室开放课题研究基金资助项目（ZZYJKT2020-02）

作者简介：孙晓明（1992-），男，博士研究生，E-mail：sunxiaoming@csu.edu.cn；通信作者：崔晓辉（1984-），男，博士，副教授，E-mail：cuixh622@csu.edu.cn6063

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