Electromagnetic impacting medium forming (EIMF) for aluminum alloy tube by using flat spiral coil

被引：2

作者：

Xu, Junrui ^{[1
,2
,3
,4
]}

Hua, Moxi ^{[2
]}

Feng, Yuanhua ^{[2
]}

Gao, Pengfei ^{[4
]}

Cui, Junjia ^{[5
]}

机构：

[1] Inner Mongolia Univ Technol, Sch Mat Sci & Engn, Hohhot 010051, Peoples R China

[2] Xiangtan Univ, Sch Mech Engn, Xiangtan 411105, Peoples R China

[3] Huazhong Univ Sci & Technol, State Key Lab Mat Proc & Die & Mould Technol, Wuhan 430074, Peoples R China

[4] Northwestern Polytech Univ, State Key Lab Solidificat Proc, Xian 710072, Peoples R China

[5] Hunan Univ, Coll Mech & Vehicle Engn, State Key Lab Adv Design & Mfg Vehicle Body, Changsha 410082, Peoples R China

来源：

INTERNATIONAL JOURNAL OF MATERIAL FORMING | 2021年 / 14卷 / 04期

基金：

中国国家自然科学基金;

关键词：

Electromagnetic forming; Electromagnetic impacting medium forming; Aluminum alloy tube; Temperature; SHEET; BEHAVIOR; STRESS;

D O I：

10.1007/s12289-020-01550-3

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

This paper proposes an innovative electromagnetic forming process for the manufacturing of aluminum alloy tubes, namely electromagnetic impacting medium forming (EIMF) process using flat spiral coil. The proposed EIMF process was implemented and characterized by numerical and experimental methods. Based on medium height and discharge energy, deformation region of tube was analytically determined and verified by finite element (FE) analysis. Effects of medium height and discharge energy for maximum diameter and strain rate of deformation tube were characterized numerically and experimentally. Flow defect of medium was observed at higher discharge energy. To estimate the effect of capacitance, four types of capacitance were designed and evaluated by numerical analysis. Through EIMF experiments, tubes with temperature from 25 degrees C to 200 degrees C were investigated and variations of maximum diameter (expansion ratio), thickness (thinning ratio) were obtained. Comparing with results under discharge energy, temperature has more obvious effects. Major and minor strains displayed higher level at 200 degrees C. Metallographic and morphologies were characterized by optical microscope (OM) and scanning electron microscopy (SEM). Results showed that refinement of average grain size and ductile fracture depends on the increase of discharge energy and temperature.

引用

页码：607 / 622

页数：16

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