Advances in Materials

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As-cast Microstructures and Mechanical Properties of Mg-5Y-2Nd-xSm-0.5Zr (x= 0, 1, 3, 5) Magnesium Alloys

Received: 09 August 2018    Accepted:     Published: 13 August 2018
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Abstract

The microstructures and mechanical properties of the as-cast Mg-5Y-2Nd-xSm-0.5Zr (x= 0, 1, 3, 5) alloys have been investigated by optical microscope (OM), scanning electron microscopy (SEM), energy dispersive spectrometer (EDS) analysis, transmission electron microscopy (TEM), X-ray diffraction (XRD) and mechanical tensile test. The results show that all the as-cast alloys are mainly composed of α-Mg, Mg24Y5 and Mg41Nd5. After adding Sm, the alloy has a new phase of Mg41Sm5. Furthermore, grain gets refinement, the second phases gradually increase and the morphology of second phases transforms to continuous network distribution. In addition, the mechanical properties of the as-cast alloys vary with Sm content. With the increase of Sm, the ultimate tensile strength, yield strength and hardness of the alloy increase firstly and then decrease, and the elongation decreases. When the amount of Sm is 3%, the alloy has the best mechanical properties, and the ultimate tensile strength, yield strength, hardness and elongation are 245.9 MPa, 207.6 MPa, HV85.9 and 5.88%, respectively. The Mg-5Y-2Nd-0.5Zr alloy to which Sm is not added has a mixed fracture characteristic of ductile fracture and local cleavage fracture. In comparison, when the Sm is 3%, the tear surface of the fracture surface is fine and uniform, and there is no obvious secondary crack and a large dissociation surface, indicating that the fracture energy absorbs more energy, so it shows a high fracture. Strength and high elongation.

DOI 10.11648/j.am.20180702.17
Published in Advances in Materials (Volume 7, Issue 2, June 2018)
Page(s) 58-63
Creative Commons

This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.

Copyright

Copyright © The Author(s), 2024. Published by Science Publishing Group

Keywords

Mg-Y-Nd Alloy, Sm, Microstructures, Mechanical Properties

References
[1] XIN Mingde, JI Zesheng. Research Situation and Application Prospects of Rare Earth in Foundry Magnesium Alloy [J]. Journal of the Chinese Society of Rare Earths, 2010, 28 (6): 643-653.
[2] WANG Mukong, SUN Jianxin, LIU Xinchao. Development of Research and Application of Cast Magnesium Alloys [J]. Nonferrous Metals, 2012, (2): 56-59.
[3] Robson J D, Haigh S J, Davis B. Grain Boundary Segregation of Rare-Earth Elements in Magnesium Alloys [J]. Metallurgical And Materials Transactions A-Physical Metallurgy And Material, 2016, 47A: 522-530.
[4] Honghui Liu, Zhiliang Ning, Junying Yi, Qian Ma, Haichao Sun, Yongjiang Huang, Jianfei Sun. Effect of Dy addition on microstructure and mechanical properties of Mg-4Y-3Nd-0.4Zr alloy [J]. Transactions of Nonferrous Metals Society of China, 2017, 4, 797-803.
[5] FU San-ling, LI Quan-an, JING Xiao-tian, et al. Effects of heat treatment on microstructure of Mg-12Gd-2Y-0.5Sm-0.5Sb-0.5Zr alloy [J]. Transactions of Materials and Heat Treatment, 2014, 35 (4): 47-50.
[6] H. R. Jafari Nodooshan, Liu W C, Wu G H, Rao Y, Zhou C X, He S P, Ding W J, R. Mahmudi. Effect of Gd content on microstructure and mechanical properties of Mg–Gd–Y–Zr alloys under peak-aged condition [J]. Materials Science & Engineering A, 2014, 615 (2014): 79–86.
[7] Qiang Yang, Kai Guan, Xin Qiu, Deping Zhang, Shuhui Lv, Fanqiang Bu, Yaqin Zhang, Xiaojuan Liu, Jian Meng. Structures of Al2Sm phase in a high-pressure die-cast Mg–4Al–4Sm–0.3Mn alloy [J]. Materials Science and Engineering: A, 2016, 675, 396-402.
[8] DING Wen-jiang, WU Yu-juan, PENG Li-ming, et al. Research and Application Development of Advanced Magnesium Alloys [J]. Materials China, 2010, 29 (8): 37-45.
[9] Serebryany V N, Rokhlin L L, Monina A N. Texture and anisotropy of mechanical properties of the magnesium alloy of Mg-Y-Gd-Zr system [J]. Inorganic Materials Applied Research, 2014, 5 (2): 116-123.
[10] Liping Zhong, Jian Peng, Song Sun, Yongjian Wang, Yun Lu, Fusheng Pan. Microstructure and Thermal Conductivity of As-Cast and As-Solutionized Mg–Rare Earth Binary Alloys [J]. Journal of Materials Science & Technology, 2017, 33, 1240-1248.
[11] WU Wen-xiang, JIN Li, DONG Jie, et al. Research progress of high strength and heat resistant Mg-Gd-Y-Zr alloys [J]. The Chinese Journal of Nonferrous Metals, 2011, 21 (11): 2709-2718.
[12] FU San-ling, LI Quan-an, JING Xiao-tian, et al. Effect of Gd content on microstructure and mechanical properties of Mg-Gd-Sm-Zr alloy [J]. Transactions of Materials and Heat Treatment, 2016, 37 (8): 41-46.
[13] LI Quan-an, ZHANG Qing, WANG Yao-gui. Effects of Sm addition on microstructure and mechanical properties of a Mg-10Y alloy [J]. China Foundry, 2014, 11 (1): 28-32.
[14] Yang M B, Hou M D, Zhang J, et al. Effects of Ce, Y and Gd additions on as-cast microstructure and mechanical properties of Mg-3Sn-2Sr magnesium alloy. Transactions of Nonferrous Metals Society of China, 2014, 8: 2497-2506.
[15] Lapovok R, Zolotoyabko E, Berner A. Structure and mechanical property variations in Mg-Gd-Y-Zn-Zr alloy depending on its composition and processing condition [J]. Philosophical Magazine, 2016, 96: 1022-1046.
[16] LI Quan-an, LI Ke-jie, ZHANG Qing. Effects of Sm on microstructure and mechanical properties of aged Mg-12Gd-2Y-0.5Zr alloy [J]. Transactions of Materials and Heat Treatment, 2011, 32 (12): 84-88.
[17] TANG Yi-jin, ZHANG Zhen-yan, JIN Li, et al. Research progress on ageing precipitation of Mg-Gd alloys [J]. The Chinese Journal of Nonferrous Metals, 2014, 24 (1): 8-24.
[18] Kainer K U. Magnesium Alloys and Technology [M]. Weinheim: WILEY, 2003.
[19] Liu Ningyuan, Zhang Zhenyan, Peng Liming et al. Microstructure evolution and mechanical properties of Mg-Gd-Sm-Zr alloys. Materials Science and Engineering: A, 2015. 627: 223-229.
[20] Mordike B L, T Ebert. Magnesium: Properties-applications-potential [J]. Materials Science and Engineering: A, 2001, 302 (1): 37-45.
[21] Xiaoyang Xu, Xianhua Chen, Weiwei Du, Yuxiao Geng, Fusheng Pan. Effect of Nd on microstructure and mechanical properties of as-extruded Mg-Y-Zr-Nd alloy [J]. Journal of Materials Science & Technology, 2017, 33, 926-934.
Author Information
  • School of Materials Science and Engineering, Henan University of Science and Technology, Luoyang, China

  • School of Materials Science and Engineering, Henan University of Science and Technology, Luoyang, China; Collaborative Innovation Center of Nonferrous Metals, Luoyang, China

  • School of Materials Science and Engineering, Henan University of Science and Technology, Luoyang, China

  • School of Materials Science and Engineering, Henan University of Science and Technology, Luoyang, China

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  • APA Style

    Gui Yunwei, Li Quanan, Chen Xiaoya, Li Zhitao. (2018). As-cast Microstructures and Mechanical Properties of Mg-5Y-2Nd-xSm-0.5Zr (x= 0, 1, 3, 5) Magnesium Alloys. Advances in Materials, 7(2), 58-63. https://doi.org/10.11648/j.am.20180702.17

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    ACS Style

    Gui Yunwei; Li Quanan; Chen Xiaoya; Li Zhitao. As-cast Microstructures and Mechanical Properties of Mg-5Y-2Nd-xSm-0.5Zr (x= 0, 1, 3, 5) Magnesium Alloys. Adv. Mater. 2018, 7(2), 58-63. doi: 10.11648/j.am.20180702.17

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    AMA Style

    Gui Yunwei, Li Quanan, Chen Xiaoya, Li Zhitao. As-cast Microstructures and Mechanical Properties of Mg-5Y-2Nd-xSm-0.5Zr (x= 0, 1, 3, 5) Magnesium Alloys. Adv Mater. 2018;7(2):58-63. doi: 10.11648/j.am.20180702.17

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  • @article{10.11648/j.am.20180702.17,
      author = {Gui Yunwei and Li Quanan and Chen Xiaoya and Li Zhitao},
      title = {As-cast Microstructures and Mechanical Properties of Mg-5Y-2Nd-xSm-0.5Zr (x= 0, 1, 3, 5) Magnesium Alloys},
      journal = {Advances in Materials},
      volume = {7},
      number = {2},
      pages = {58-63},
      doi = {10.11648/j.am.20180702.17},
      url = {https://doi.org/10.11648/j.am.20180702.17},
      eprint = {https://download.sciencepg.com/pdf/10.11648.j.am.20180702.17},
      abstract = {The microstructures and mechanical properties of the as-cast Mg-5Y-2Nd-xSm-0.5Zr (x= 0, 1, 3, 5) alloys have been investigated by optical microscope (OM), scanning electron microscopy (SEM), energy dispersive spectrometer (EDS) analysis, transmission electron microscopy (TEM), X-ray diffraction (XRD) and mechanical tensile test. The results show that all the as-cast alloys are mainly composed of α-Mg, Mg24Y5 and Mg41Nd5. After adding Sm, the alloy has a new phase of Mg41Sm5. Furthermore, grain gets refinement, the second phases gradually increase and the morphology of second phases transforms to continuous network distribution. In addition, the mechanical properties of the as-cast alloys vary with Sm content. With the increase of Sm, the ultimate tensile strength, yield strength and hardness of the alloy increase firstly and then decrease, and the elongation decreases. When the amount of Sm is 3%, the alloy has the best mechanical properties, and the ultimate tensile strength, yield strength, hardness and elongation are 245.9 MPa, 207.6 MPa, HV85.9 and 5.88%, respectively. The Mg-5Y-2Nd-0.5Zr alloy to which Sm is not added has a mixed fracture characteristic of ductile fracture and local cleavage fracture. In comparison, when the Sm is 3%, the tear surface of the fracture surface is fine and uniform, and there is no obvious secondary crack and a large dissociation surface, indicating that the fracture energy absorbs more energy, so it shows a high fracture. Strength and high elongation.},
     year = {2018}
    }
    

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  • TY  - JOUR
    T1  - As-cast Microstructures and Mechanical Properties of Mg-5Y-2Nd-xSm-0.5Zr (x= 0, 1, 3, 5) Magnesium Alloys
    AU  - Gui Yunwei
    AU  - Li Quanan
    AU  - Chen Xiaoya
    AU  - Li Zhitao
    Y1  - 2018/08/13
    PY  - 2018
    N1  - https://doi.org/10.11648/j.am.20180702.17
    DO  - 10.11648/j.am.20180702.17
    T2  - Advances in Materials
    JF  - Advances in Materials
    JO  - Advances in Materials
    SP  - 58
    EP  - 63
    PB  - Science Publishing Group
    SN  - 2327-252X
    UR  - https://doi.org/10.11648/j.am.20180702.17
    AB  - The microstructures and mechanical properties of the as-cast Mg-5Y-2Nd-xSm-0.5Zr (x= 0, 1, 3, 5) alloys have been investigated by optical microscope (OM), scanning electron microscopy (SEM), energy dispersive spectrometer (EDS) analysis, transmission electron microscopy (TEM), X-ray diffraction (XRD) and mechanical tensile test. The results show that all the as-cast alloys are mainly composed of α-Mg, Mg24Y5 and Mg41Nd5. After adding Sm, the alloy has a new phase of Mg41Sm5. Furthermore, grain gets refinement, the second phases gradually increase and the morphology of second phases transforms to continuous network distribution. In addition, the mechanical properties of the as-cast alloys vary with Sm content. With the increase of Sm, the ultimate tensile strength, yield strength and hardness of the alloy increase firstly and then decrease, and the elongation decreases. When the amount of Sm is 3%, the alloy has the best mechanical properties, and the ultimate tensile strength, yield strength, hardness and elongation are 245.9 MPa, 207.6 MPa, HV85.9 and 5.88%, respectively. The Mg-5Y-2Nd-0.5Zr alloy to which Sm is not added has a mixed fracture characteristic of ductile fracture and local cleavage fracture. In comparison, when the Sm is 3%, the tear surface of the fracture surface is fine and uniform, and there is no obvious secondary crack and a large dissociation surface, indicating that the fracture energy absorbs more energy, so it shows a high fracture. Strength and high elongation.
    VL  - 7
    IS  - 2
    ER  - 

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