Experimental investigation on electrically assisted cylindrical deep drawing of AZ31B magnesium alloy sheet

Xie, Huanyang; Dong, Xianghuai; Ai, Zhenqiu; Wang, Qian; Peng, Fang-Le; Li, Kai; Chen, Fei; Wang, Jianfeng

doi:10.1007/s00170-015-8246-0

Cited by 30 publications

(10 citation statements)

References 30 publications

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“…Considering the high efficiency of electric heating, electrically assisted processing is promising to achieve increased deformation for magnesium alloys [ 10 , 11 ]. Scholars have carried out related research on electro-assisted hot incremental forming (EHIF).…”

Section: Introductionmentioning

confidence: 99%

Temperature Influence on Formability and Microstructure of AZ31B during Electric Hot Temperature-Controlled Incremental Forming

et al. 2021

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The straight groove test of AZ31B magnesium alloy sheet by electric hot temperature-controlled incremental sheet forming (ISF) was conducted at different temperatures. The temperature influence on fracture depth, deformation force and strain distribution was investigated. It was found that the limit depth and major strain increased as the temperature rose and that the forming force decreased correspondingly. Furthermore, the fracture behavior changed from brittle fracture to ductile fracture. Considering the formability and surface wear comprehensively, the optimized forming temperature was determined to be 300 °C. The microstructure of the groove specimen was analyzed and the dynamic recrystallization (DRX) was considered to be the reason for the improved formability. The degree of DRX depended on the temperature and degree of deformation, which resulted in non-uniform distribution of hardness within the cross section of the groove specimen.

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Section: Introductionmentioning

confidence: 99%

Temperature Influence on Formability and Microstructure of AZ31B during Electric Hot Temperature-Controlled Incremental Forming

et al. 2021

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“…The parameters varied were the peak current density up to 250 A/mm 2 (calculated by us from the geometry of the samples indicated in the publication and the scheme of their deep drawing deformation) and the current pulse rate (up to 800 Hz). The results show that an increase in either parameter at a constant temperature can result in an improvement of the deep drawing limit of up to ≈ 15% [1].…”

Section: Electroplastic Effectmentioning

confidence: 92%

“…Mg and Mg-based alloys offer a wide range of attractive properties, for example a low density, a high specific strength, a high specific stiffness and good damping properties [1]. Mg-alloys are therefore frequently employed for lightweight applications.…”

Section: Introductionmentioning

confidence: 99%

Visualization and Observation of Morphological Peculiarities of Twin Formation in Mg-Based Samples After Electrically Assisted Forming

Reschka

Gerstein

Dalinger

et al. 2019

Metallogr. Microstruct. Anal.

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By using electrically assisted forming the usually rather poor workability of magnesium can be improved. The processes taking place during these forming operations have a strong influence on the microstructure. However, the metallographic preparation of magnesium is challenging due to its low hardness and strong tendency to oxidize. Therefore, a reliable preparation method was developed that revealed the microstructural features caused by the electrically assisted forming. The different morphologies of twins caused by plastic deformation and of those caused by an electric impulse could clearly be distinguished.

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“…The height-diameter ratio of the non-electrically bulging shape was 0.4 at the same temperature, while the height-diameter ratio of the electrically-assisted bulging shape could be raised to 0.48 when the peak current density was 45 A/mm2. Xie et al [13] studied the effect of current on an AZ31B magnesium alloy, and showed that the drawing limit increased by 1 mm when the current or frequency increased at the same temperature, indicating that the magnesium alloy material exhibited a pure electroplastic effect during drawing. Li [14] investigated the electroplasticity of magnesium alloys and believed that the enhanced plasticity of the magnesium alloys at low temperatures was due to the dynamic recrystallization induced by electrical pulses, which could promote dislocation movement within the material and speed up the rate of dynamic recrystallization nucleation.…”

Section: Introductionmentioning

confidence: 99%

Thermoelectric coupling deep drawing process of ZK60 magnesium alloys

Zhan

Wang

et al. 2023

Int J Adv Manuf Technol

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In this work, thermal deep drawing and thermoelectric coupling drawing tests were performed on an annealed ZK60 magnesium alloy sheet to investigate the effect of the pulse current on the formability of the ZK60 magnesium alloy during the drawing process. The effects of thermal deep drawing and the thermoelectric coupling on the forming of drawn parts were studied, and the change laws of the thinning rate and hardness were obtained. The results showed that the use of pulse current improved the formability of the ZK60 magnesium alloy and increased the ultimate depth of drawing. The hardness value of the drawn part showed an overall increasing trend, followed by thermoelectric coupling deep drawing, which was signi cantly higher than the sheet after annealing without deep drawing. The deepdrawn parts had varied grain sizes in different places, and dynamic recrystallization occurred to varying degrees in each region. Furthermore, the degree of dynamic recrystallization in the punch llet and cylinder wall was signi cantly higher than in other areas.

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Experimental investigation on electrically assisted cylindrical deep drawing of AZ31B magnesium alloy sheet

Cited by 30 publications

References 30 publications

Temperature Influence on Formability and Microstructure of AZ31B during Electric Hot Temperature-Controlled Incremental Forming

Temperature Influence on Formability and Microstructure of AZ31B during Electric Hot Temperature-Controlled Incremental Forming

Visualization and Observation of Morphological Peculiarities of Twin Formation in Mg-Based Samples After Electrically Assisted Forming

Thermoelectric coupling deep drawing process of ZK60 magnesium alloys

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