Effect of High Y Addition on Microstructure and Mechanical Properties of Mg-2Zn-1Mn Alloy

doi:10.12442/j.issn.1002-185X.20220172

Home > Archive>Volume 52, Issue 1, 2023 >54-62. DOI:10.12442/j.issn.1002-185X.20220172

Effect of High Y Addition on Microstructure and Mechanical Properties of Mg-2Zn-1Mn Alloy
DOI:
                        10.12442/j.issn.1002-185X.20220172
                    
Author:
                        Luo Yulun1,2Luo Yulun
College of Materials Science and Engineering, Chongqing University, Chongqing 400045, China;National Engineering Research Center for Magnesium Alloys, Chongqing University, Chongqing University, Chongqing 400044, China
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Zhang Dingfei1,2Zhang Dingfei
College of Materials Science and Engineering, Chongqing University, Chongqing 400045, China;National Engineering Research Center for Magnesium Alloys, Chongqing University, Chongqing University, Chongqing 400044, China
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Hua Jianrong1,2Hua Jianrong
College of Materials Science and Engineering, Chongqing University, Chongqing 400045, China;National Engineering Research Center for Magnesium Alloys, Chongqing University, Chongqing University, Chongqing 400044, China
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Dai Qimin1,2Dai Qimin
College of Materials Science and Engineering, Chongqing University, Chongqing 400045, China;National Engineering Research Center for Magnesium Alloys, Chongqing University, Chongqing University, Chongqing 400044, China
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Zhong Shiyu1,2Zhong Shiyu
College of Materials Science and Engineering, Chongqing University, Chongqing 400045, China;National Engineering Research Center for Magnesium Alloys, Chongqing University, Chongqing University, Chongqing 400044, China
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Xu Junyao1,2Xu Junyao
College of Materials Science and Engineering, Chongqing University, Chongqing 400045, China;National Engineering Research Center for Magnesium Alloys, Chongqing University, Chongqing University, Chongqing 400044, China
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Hu Guangshan3Hu Guangshan
College of Information Science and Engineering, Jiaxing University, Jiaxing 314001 China
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Jiang Bin1,2Jiang Bin
College of Materials Science and Engineering, Chongqing University, Chongqing 400045, China;National Engineering Research Center for Magnesium Alloys, Chongqing University, Chongqing University, Chongqing 400044, China
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Pan Fusheng1,2Pan Fusheng
College of Materials Science and Engineering, Chongqing University, Chongqing 400045, China;National Engineering Research Center for Magnesium Alloys, Chongqing University, Chongqing University, Chongqing 400044, China
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Affiliation:1.College of Materials Science and Engineering, Chongqing University, Chongqing 400045, China;2.National Engineering Research Center for Magnesium Alloys, Chongqing University, Chongqing University, Chongqing 400044, China;3.College of Information Science and Engineering, Jiaxing University, Jiaxing 314001 China
Clc Number:
Fund Project:National Key Research and Development Program of China (2019YFC1520303); Natural Science Foundation of Zhejiang Province (LQ18E010003); Chongqing Science and Technology Commission (cstc2019jscx-mbdxX0031)

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Abstract:

The microstructure and mechanical properties of Mg-2Zn-1Mn-xY (x=0, 1, 3, 5, 7, wt%) alloy were studied by optical microscope (OM), X-ray diffractometer (XRD), X-ray fluorescence spectrometer (XRF), electron probe microanalyzer (EPMA), scanning electron microscope (SEM), electron backscatter diffractometer (EBSD), transmission electron microscope (TEM), and uniaxial tensile tests. Results show that the secondary phases of as-cast alloys are changed from Mg₇Zn₃ to Mg₃Zn₃Y₂ and finally transformed to Mg₁₂ZnY with the addition of Y element. Although Y addition hinders the dynamic recrystallization process and therefore refines the grains, the excess Y addition cannot further refine the grains. Meanwhile, the ductility of as-extruded Mg-2Zn-1Mn alloy is increased and then decreased with the addition of Y element, which may be attributed to the synergistic effect of texture orientation and grain coarsening. Besides, the strength enhancement is mainly attributed to grain refinement strengthening and secondary phase strengthening. The Mg-2Zn-1Mn-7Y alloy has the optimal mechanical properties: the ultimate tensile strength is 357 MPa, yield strength is 262 MPa, and elongation is 14%.

Key words:Mg-Zn-Mn-Y;microstructure;mechanical properties;texture

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Get Citation

[Luo Yulun, Zhang Dingfei, Hua Jianrong, Dai Qimin, Zhong Shiyu, Xu Junyao, Hu Guangshan, Jiang Bin, Pan Fusheng. Effect of High Y Addition on Microstructure and Mechanical Properties of Mg-2Zn-1Mn Alloy[J]. Rare Metal Materials and Engineering,2023,52(1):54~62.]
DOI：10.12442/j. issn.1002-185X.20220172

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Received:March 05,2022
Revised:September 04,2022
Adopted:September 27,2022
Online: February 09,2023
Published: February 08,2023

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