Deformation mechanisms of AZ31 Mg alloy sheet assisted by electrical pulse- ultrasonic composite energy field
Ultrasonic vibration and pulsed current can achieve energy concentration and effectively improve the forming ability of Magnesium alloy sheets. The uniaxial tensile tests of AZ31B sheets assisted by electric pulse, ultrasonic and electric pulse-ultrasonic composite energy fields were carried out, re...
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| Language: | English |
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Elsevier
2024-11-01
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| Series: | Materials & Design |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S0264127524008128 |
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| author | Haoran Zhang Xingrong Chu Chengxin Liu Xuemei Sun Shuxia Lin |
| author_facet | Haoran Zhang Xingrong Chu Chengxin Liu Xuemei Sun Shuxia Lin |
| author_sort | Haoran Zhang |
| collection | DOAJ |
| description | Ultrasonic vibration and pulsed current can achieve energy concentration and effectively improve the forming ability of Magnesium alloy sheets. The uniaxial tensile tests of AZ31B sheets assisted by electric pulse, ultrasonic and electric pulse-ultrasonic composite energy fields were carried out, respectively. The influence of the effective current density and duration of the electric pulse on the softening, hardening and residual effects in the deformation process caused by the coupling action were explored. The electric pulse suppresses the promoting effect of ultrasonic vibration on twinning and together with ultrasonic vibration promotes dislocation slip to coordinate deformation. The composite energy field can thus further reduce the deformation resistance. The softening, secondary hardening and residual softening phenomena caused by the electric pulse-ultrasonic composite energy field become more and more significant with the prolongation of duration. When the ultrasonic field with a frequency of 21 kHz and an amplitude of 10 μm is combined with a frequency of 600 Hz and the effective current density increases from 0 to 30 A/mm2, the influence on the softening and secondary hardening process exhibits an initial increase followed by a decrease as the current density increases, while the influence on the residual softening shows the opposite trend. |
| format | Article |
| id | doaj-art-e7f1d002c26940faa84c813ef081600e |
| institution | OA Journals |
| issn | 0264-1275 |
| language | English |
| publishDate | 2024-11-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Materials & Design |
| spelling | doaj-art-e7f1d002c26940faa84c813ef081600e2025-08-20T02:18:56ZengElsevierMaterials & Design0264-12752024-11-0124711343710.1016/j.matdes.2024.113437Deformation mechanisms of AZ31 Mg alloy sheet assisted by electrical pulse- ultrasonic composite energy fieldHaoran Zhang0Xingrong Chu1Chengxin Liu2Xuemei Sun3Shuxia Lin4Associated Engineering Research Center of Mechanics and Mechatronic Equipment, Shandong University, Weihai 264209, PR China; College of Mechanical Engineering, Taiyuan University of Technology, Taiyuan 030024, PR ChinaAssociated Engineering Research Center of Mechanics and Mechatronic Equipment, Shandong University, Weihai 264209, PR China; Corresponding authors.Associated Engineering Research Center of Mechanics and Mechatronic Equipment, Shandong University, Weihai 264209, PR ChinaSchool of Mechanical and Vehicle Engineering, Linyi University, Linyi, Shandong 276000, PR China; Corresponding authors.Associated Engineering Research Center of Mechanics and Mechatronic Equipment, Shandong University, Weihai 264209, PR ChinaUltrasonic vibration and pulsed current can achieve energy concentration and effectively improve the forming ability of Magnesium alloy sheets. The uniaxial tensile tests of AZ31B sheets assisted by electric pulse, ultrasonic and electric pulse-ultrasonic composite energy fields were carried out, respectively. The influence of the effective current density and duration of the electric pulse on the softening, hardening and residual effects in the deformation process caused by the coupling action were explored. The electric pulse suppresses the promoting effect of ultrasonic vibration on twinning and together with ultrasonic vibration promotes dislocation slip to coordinate deformation. The composite energy field can thus further reduce the deformation resistance. The softening, secondary hardening and residual softening phenomena caused by the electric pulse-ultrasonic composite energy field become more and more significant with the prolongation of duration. When the ultrasonic field with a frequency of 21 kHz and an amplitude of 10 μm is combined with a frequency of 600 Hz and the effective current density increases from 0 to 30 A/mm2, the influence on the softening and secondary hardening process exhibits an initial increase followed by a decrease as the current density increases, while the influence on the residual softening shows the opposite trend.http://www.sciencedirect.com/science/article/pii/S0264127524008128Magnesium alloyElectric pulseUltrasonic vibrationMicrostructure evolution |
| spellingShingle | Haoran Zhang Xingrong Chu Chengxin Liu Xuemei Sun Shuxia Lin Deformation mechanisms of AZ31 Mg alloy sheet assisted by electrical pulse- ultrasonic composite energy field Materials & Design Magnesium alloy Electric pulse Ultrasonic vibration Microstructure evolution |
| title | Deformation mechanisms of AZ31 Mg alloy sheet assisted by electrical pulse- ultrasonic composite energy field |
| title_full | Deformation mechanisms of AZ31 Mg alloy sheet assisted by electrical pulse- ultrasonic composite energy field |
| title_fullStr | Deformation mechanisms of AZ31 Mg alloy sheet assisted by electrical pulse- ultrasonic composite energy field |
| title_full_unstemmed | Deformation mechanisms of AZ31 Mg alloy sheet assisted by electrical pulse- ultrasonic composite energy field |
| title_short | Deformation mechanisms of AZ31 Mg alloy sheet assisted by electrical pulse- ultrasonic composite energy field |
| title_sort | deformation mechanisms of az31 mg alloy sheet assisted by electrical pulse ultrasonic composite energy field |
| topic | Magnesium alloy Electric pulse Ultrasonic vibration Microstructure evolution |
| url | http://www.sciencedirect.com/science/article/pii/S0264127524008128 |
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