EFFECT OF OUTPUT VOLTAGE ON AN AZ91D MAGNESIUM ALLOY ROLLED USING AN ELECTRIC PULSE TREATMENT
Keywords:
output voltage; electric pulse rolling; AZ91D magnesium alloy; properties
Abstract
Magnesium alloys have poor deformation properties at room temperature, and the application of an electric pulse current during deformation can improve the plastic-forming ability. In this study, the electric pulse rolling of AZ91D magnesium alloy specimens has been examined by changing the pulse output voltage. The results demonstrate that the best surface quality and lowest content (8.4 %) of the β-Mg17Al12 phase are achieved at an output voltage of 300 V. EBSD tests have revealed the lowest weave strength on {0002} and {100} at a pulse output voltage of 300 V, as well as the greatest enhancement of twinning. The maximum tensile strength was 165 MPa at an output voltage of 300 V, with a maximum elongation of 4.1 % at an output voltage of 200 V.
References
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[2] Edalati K, Uehiro R, Ikeda Y, et al. Design and synthesis of a magnesium alloy for room temperature hydrogen storage[J]. Acta Materialia, 2018:88-96.
[3] Bai Yan, Deng Kunkun, Kang Jinwen. Mechanical and wear resistance properties of (Grp+SiCp)/AZ91 magnesium matrix composites[J]. Rare Metal Materials and Engineering, 2019, 048(007):2251-2257.
[4] Liu Yongda. Study on the microplastic deformation behavior of TA2 pure titanium assisted by electric current [D]. Harbin: Harbin Institute of Technology, 2015.
[5] Zhao Zhiyong, Hou Hongliang, Zhang Yanlin, et al. Effect of pulsed current on the deformation behavior of 0.27% hydrogen-substituted Ti-6Al-4V alloy [J]. Journal of Materials Research, 2018, 5: 321-326.
[6] Troitskiy O A, Stashenko V I. Electroplastic wire drawing: A promising method of production of lightweight wire and cable [J]. Journal of Machinery Manufacture and Reliability, 2015, 44(8): 758-765.
[7] Yao K-F, Wang J, Zheng M, et al. A research on electroplastic effects in wire-drawing process of an austenitic stainless steel [J]. Scripta Materialia, 2001, 45(5): 533-540.
[8] Salandro W A, Bunget C, Mears L. Modeling and quantification of the electroplastic effect when bending stainless steel sheet metal [C]. Asme International Manufacturing Science and Engineering Conference, 2010.
[9] Jordan A, Kinsey B L. Investigation of thermal and mechanical effects during electrically-assisted microbending [J]. Journal of Materials Processing Technology, 2015, 221: 1-12.
[10] M. Yoo. Slip, twinning, and fracture in hexagonal close-packed metals[J].Metallurgical Transactions A, 1981, 12(3):409-418.
[11] Huang Hongtao. Study of plastic deformation mechanism and recrystallization behavior of AZ31 magnesium alloy[D]. Thesis, Qinghua University, Beijing, 2013.
[12] Agnew S R, Tomé C N, Brow D W, et al. Study of slip mechanisms in a magnesium alloy by neutron diffraction and modeling [J]. Scripta Materialia, 2003,48(8): 1003-1008.
[13] Zhou Y, Zhang W, Wang B, et al. Grain refinement and formation of ultrafine-grained microstructure in a low-carbon steel under electropulsing[J]. Journal of materials research, 2002, 17(8): 2105-2111.
[14] Zhou Y, Xiao S, Guo J. Recrystallized microstructure in cold worked brass produced by electropulsing treatment [J]. Materials Letters, 2004, 58(12-13): 1948-1951.
[15] Wang X, Dai W, Ma C, et al. Effect of electric current direction on recrystallization rate and texture of a Cu–Zn alloy[J]. Journal of Materials Research, 2013, 28(10): 1378-1385.
[16] Wang X, Liu M, Dai W, et al. Effect of electric current direction on the microstructural evolution and mechanical properties of a cold-rolled Cu–Zn alloy during the phase transformation induced by electric current pulses[J]. Journal of Materials Research, 2015, 30(16): 2500-2507.
[17] Jin W, Fan J, Zhang H, et al. Microstructure, mechanical properties and static recrystallization behavior of the rolled ZK60 magnesium alloy sheets processed by electropulsing treatment [J]. Journal of Alloys and Compounds, 2015, 646: 1-9.
[18] Liu Y, Fan J, Zhang H, et al. Recrystallization and microstructure evolution of the rolled Mg–3Al–1Zn alloy strips under electropulsing treatment [J]. Journal of Alloys and Compounds, 2015, 622: 229-235.
[19] Jeong H J, Kim M J, Park J W, et al. Effect of pulsed electric current on dissolution of Mg17Al12 phases in as-extruded AZ91 magnesium alloy[J]. Materials Science and Engineering, 2017, 684(JAN.27):668-676.
[20] Indhiarto I, Shimizu T, Yang M. Effect of Peak Current Density on Tensile Properties of AZ31B Magnesium Alloy. [J]. Materials (Basel, Switzerland), 2021, 14(6):
[21] Han Chaoyu. Study on the mechanism of action of high-energy electric pulse toughening of alloy steel_Han Chaoyu [D]. University of Science and Technology Beijing, 2023
[22] Zhang L, Li YL. Research progress on grain refinement methods for magnesium alloys[J]. Foundry, 2019, 68(11): 1195-1203.
[23] Yuasa M, Miyazawa N, Hayashi M, et al. Effects of group IIl elements on the cold stretch formability of Mg-Zn alloys[J]. Acta Materialia, 2015,83:294-303.
[24] Tang Y, Huo W, Dong L, et al. An ultra-high formability at room temperature induced by continually dynamic micro-nanocrystallization of Mg rare earth alloy[J]. Materials Letters,2023, 339:134090.
[25] Qiao H, Agnew S R, Wu P D. Modeling twinning and detwinning behavior of Mg alloy ZK60A during monotonic and cyclic loading. Int.J. Plast. 2015;65:61-84.
[26] Shan Zhaohui. Microstructure and mechanical properties of AZ-system deformed magnesium alloy treated with high-density pulse current.
Published
2024-04-02
How to Cite
1.
Feng J, Zhou Y, Liu D, Zhang Y, Geng G. EFFECT OF OUTPUT VOLTAGE ON AN AZ91D MAGNESIUM ALLOY ROLLED USING AN ELECTRIC PULSE TREATMENT. MatTech [Internet]. 2024Apr.2 [cited 2024Dec.10];58(2):113–120. Available from: https://mater-tehnol.si/index.php/MatTech/article/view/960
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