留言板

尊敬的读者、作者、审稿人, 关于本刊的投稿、审稿、编辑和出版的任何问题, 您可以本页添加留言。我们将尽快给您答复。谢谢您的支持!

姓名
邮箱
手机号码
标题
留言内容
验证码
Volume 24 Issue 3
Mar.  2017
Turn off MathJax
目录
数据统计

分享

计量
  • 文章访问数:  487
  • HTML全文浏览量:  71
  • PDF下载量:  8
  • 被引次数: 0
文章导航 >  矿物冶金与材料学报（英文）  > 2017  >  24(3): 271-279
Zhi-yong Xue, Yue-juan Ren, Wen-bo Luo, Yu Ren, Ping Xu, and Chao Xu, Microstructure evolution and mechanical properties of a large-sized ingot of Mg-9Gd-3Y-1.5Zn-0.5Zr (wt%) alloy after a lower-temperature homogenization treatment, Int. J. Miner. Metall. Mater., 24(2017), No. 3, pp. 271-279. https://doi.org/10.1007/s12613-017-1405-6
Cite this article as:
Zhi-yong Xue, Yue-juan Ren, Wen-bo Luo, Yu Ren, Ping Xu, and Chao Xu, Microstructure evolution and mechanical properties of a large-sized ingot of Mg-9Gd-3Y-1.5Zn-0.5Zr (wt%) alloy after a lower-temperature homogenization treatment, Int. J. Miner. Metall. Mater., 24(2017), No. 3, pp. 271-279. https://doi.org/10.1007/s12613-017-1405-6
shu
引用本文 PDF XML SpringerLink
研究论文

Microstructure evolution and mechanical properties of a large-sized ingot of Mg-9Gd-3Y-1.5Zn-0.5Zr (wt%) alloy after a lower-temperature homogenization treatment

  • School of Energy, Power and Mechanical Engineering, North China Electric Power University, Beijing 102206, China

  • School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China

  • College of Science, Rocket Force University of Engineering, Xi’an 710025, China

  • 通讯作者:

    Zhi-yong Xue    E-mail: xuezy@ncepu.edu.cn

  • In this paper, a large-sized ingot of Mg-9Gd-3Y-1.5Zn-0.5Zr (wt%) alloy with a diameter of 600 mm was successfully prepared by the semi-continuous casting method. The alloy was subsequently annealed at a relatively low temperature of 430℃ for 12 h as a homogenization treatment. The microstructure and room-temperature mechanical properties of the alloy were investigated systematically. The results show that the as-cast alloy contained a mass of discontinuous lamellar-shaped 18R long-period stacking ordered (LPSO) phases with a composition of Mg10ZnY and an α-Mg matrix, along with net-shaped Mg5(Y,Gd) eutectic compounds at the grain boundaries. Most of the eutectic compounds dissolved after the homogenization treatment. Moreover, the amount and dimensions of the lamellar-shaped LPSO phase obviously increased after the homogenization treatment. The structure of the phase transformed into 14H-type LPSO with composition Mg12Zn(Y,Gd). The mechanical properties of the heat-treated large-sized alloy ingot are uniform. The ultimate tensile strength (UTS) and tensile yield strength (TYS) of the alloy reached 207.2 MPa and 134.8 MPa, respectively, and the elongation was 3.4%. The high performances of the large-sized alloy ingot after the homogenization treatment is attributed to the strengthening of the α-Mg solid solution and to the plentiful LPSO phase distributed over the α-Mg matrix.
    • Research Article

    Microstructure evolution and mechanical properties of a large-sized ingot of Mg-9Gd-3Y-1.5Zn-0.5Zr (wt%) alloy after a lower-temperature homogenization treatment

    + Author Affiliations
      Abstract
    • In this paper, a large-sized ingot of Mg-9Gd-3Y-1.5Zn-0.5Zr (wt%) alloy with a diameter of 600 mm was successfully prepared by the semi-continuous casting method. The alloy was subsequently annealed at a relatively low temperature of 430℃ for 12 h as a homogenization treatment. The microstructure and room-temperature mechanical properties of the alloy were investigated systematically. The results show that the as-cast alloy contained a mass of discontinuous lamellar-shaped 18R long-period stacking ordered (LPSO) phases with a composition of Mg10ZnY and an α-Mg matrix, along with net-shaped Mg5(Y,Gd) eutectic compounds at the grain boundaries. Most of the eutectic compounds dissolved after the homogenization treatment. Moreover, the amount and dimensions of the lamellar-shaped LPSO phase obviously increased after the homogenization treatment. The structure of the phase transformed into 14H-type LPSO with composition Mg12Zn(Y,Gd). The mechanical properties of the heat-treated large-sized alloy ingot are uniform. The ultimate tensile strength (UTS) and tensile yield strength (TYS) of the alloy reached 207.2 MPa and 134.8 MPa, respectively, and the elongation was 3.4%. The high performances of the large-sized alloy ingot after the homogenization treatment is attributed to the strengthening of the α-Mg solid solution and to the plentiful LPSO phase distributed over the α-Mg matrix.
      • FullText(HTML)
    • loading
      • Supplements(0)
      • References(22)
    • [1]
      Q.D. Wang, J. Chen, Z. Zhao, and S.M. He, Microstructure and super high strength of cast Mg-8.5Gd-2.3Y-1.8Ag-0.4Zr alloy, Mater. Sci. Eng. A, 528(2010), No. 1, p. 323.
      [2]
      C. Xu, M.Y. Zheng, S.W. Xu, K. Wu, E.D. Wang, S. Kamado, G.J. Wang, and X.Y. Lv, Ultra high-strength Mg-Gd-Y-Zn-Zr alloy sheets processed by large-strain hot rolling and ageing, Mater. Sci. Eng. A, 547(2012), p. 93.
      [3]
      D.J. Li, X.Q. Zeng, J. Dong, C.Q. Zhai, and W.J. Ding, Microstructure evolution of Mg-10Gd-3Y-1.2Zn-0.4Zr, J. Alloys Compd., 468(2009), No. 1-2, p. 164.
      [4]
      D. Griffiths, Explaining texture weakening and improved formability in magnesium rare earth alloys, Mater. Sci. Technol., 31(2015), No. 1, p. 10.
      [5]
      X. Liu, Q.C. Le, Z.Q. Zhang, L. Bao, Z.X. Fan, and J.Z. Cui, Effects of casting process on microstructures and flow stress behavior of Mg-9Gd-3Y-1.5Zn-0.8Zr semi-continuous casting billets, J. Magnesium Alloys, 2(2014), No. 4, p. 342.
      [6]
      J.W. Chang, J. Duo, Y.Z. Xiang, H.Y. Yang, W.J. Ding, and Y.H. Peng, Influence of Nd and Y additions on the corrosion behavior of extruded Mg-Zn-Zr alloys, Int. J. Miner. Metall. Mater., 18(2011), No. 2, p. 203.
      [7]
      T. Itoi, K. Takahashi, H. Moriyama, and M. Hirohashi, A high-strength Mg-Ni-Y alloy sheet with a long-period ordered phase prepared by hot-rolling, Scripta Mater., 59(2008), No. 10, p. 1155.
      [8]
      Y. Kawamura, K. Hayashi, A. Inoue, and T. Masumoto, Rapidly solidified powder metallurgy Mg97Zn1Y2 alloys with excellent tensile yield strength above 600 MPa, Mater. Trans., 42(2001), No. 7, p. 1172.
      [9]
      J.F. Nie, Precipitation and hardening in Magnesium alloys, Metall. Mater. Trans. A, 43A(2012), No. 11, p. 3891.
      [10]
      M. Yamasaki, K. Hashimoto, K. Hagihara, and Y. Kawamura, Effect of multimodal microstructure evolution on mechanical properties of Mg-Zn-Y extruded alloy, Acta Mater., 59(2011), No. 9, p. 3646.
      [11]
      M. Yamasaki, T. Anan, S. Yoshimoto, and Y. Kawamura, Mechanical properties of warm-extruded Mg-Zn-Gd alloy with coherent 14H long periodic stacking ordered structure precipitate, Scripta Mater., 53(2005), No. 7, p. 799.
      [12]
      J.F. Nie, Y.M. Zhu, and A.J. Morton, On the structure, transformation and deformation of long-period stacking ordered phase in Mg-Y-Zn alloys, Metall. Mater. Trans. A, 45(2014), No. 8, p. 3338.
      [13]
      Y.X. Du, Y.J. Wu, L.M. Peng, J. Chen, X.Q. Zeng, and W.J. Ding, Formation of lamellar phase with 18R-type LPSO structure in an as-cast Mg96Gd3Zn1(at%) alloy, Mater. Lett., 169(2016), p. 168.
      [14]
      C. Xu, M.Y. Zheng, K. Wu, E.D. Wang, G.H. Fan, S.W. Xu, S. Kamado, X.D. Liu, G.J. Wang, and X.Y. Lv, Effect of cooling rate on the microstructure evolution and mechanical properties of homogenized Mg-Gd-Y-Zn-Zr alloy, Mater. Sci. Eng. A, 559(2013), p. 364.
      [15]
      M. Yamasaki, K. Hagihara, S. Inoue, J.P. Hadorn, and Y. Kawamura, Crystallographic classification of kink bands in an extruded Mg-Zn-Y alloy using intragranular misorientation axis analysis, Acta Mater., 61(2013), No. 6, p. 2065.
      [16]
      T. Homma, N. Kunito, and S. Kamado, Fabrication of extraordinary high-strength magnesium alloy by hot extrusion, Scripta Mater., 61(2009), No. 6, p. 644.
      [17]
      L. Zhang, Z. Liu, and P.L. Mao, Effect of annealing on the microstructure and mechanical properties of Mg-2.5Zn-0.5Y alloy, Int. J. Miner. Metall. Mater., 21(2014), No. 8, p. 779.
      [18]
      Z.Q. Wang, B. Zhang, D.J. Li, R. Fritsch, X.Q. Zeng, H.J. Roven, and W.J. Ding, Effect of heat treatment on microstructures and mechanical properties of high vacuum die casting Mg-8Gd-3Y-0.4Zr magnesium alloy, Trans. Nonferrous Met. Soc. China, 24(2014), No. 12, p. 3762.
      [19]
      J. D. Robson, Effect of rare-earth additions on the texture of wrought magnesium alloys:the role of grain boundary segregation, Metall. Mater. Trans. A, 45(2014), No. 8, p. 3205.
      [20]
      F.M. Lu, A.B. Ma, J.H. Jiang, D.H. Yang, and Q. Zhou, Review on long-period stacking-ordered structures in Mg-Zn-RE alloys, Rare Met., 31(2012), No. 3, p. 303.
      [21]
      J.C. Li, Z.L. He, P.H. Fu, Y.J. Wu, L.M. Peng, and W.J. Ding, Heat treatment and mechanical properties of a high-strength cast Mg-Gd-Zn alloy, Mater. Sci. Eng. A, 651(2016), p. 745.
      [22]
      G.D. Zhang, X.G. Li, M.L. Ma, Y.J. Li, G.L. Shi, J.W. Yuan, and K. Zhang, Homogenization heat treatment of Mg-7.68Gd-4.88Y-1.32Nd-0.63Al-0.05Zr alloy, J. Rare Earths, 32(2014), No. 5, p. 445.
      • Relative Articles
      Cited By

    Catalog


    • /

      返回文章
      返回

      版权所有 ©《矿物冶金与材料学报（英文）》编辑部

      地址：北京市海淀区学院路30号邮政编码：100083

      电子邮箱：journal@ustb.edu.cn电话：+86-10-62332875

      本系统由 北京仁和汇智信息技术有限公司 开发    百度统计