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 26 Issue 11
Nov.  2019
Turn off MathJax
目录
数据统计

分享

计量
  • 文章访问数:  641
  • HTML全文浏览量:  104
  • PDF下载量:  22
  • 被引次数: 0
文章导航 >  矿物冶金与材料学报（英文）  > 2019  >  26(11): 1457-1466
Jia-hong Zhang, Shu-ming Xing, Xiao-hui Ao, Peng Sun,  and Ru-fen Wang, Effect of Ca modification on the elemental composition, microstructure and tensile properties of Al-7Si-0.3Mg alloy, Int. J. Miner. Metall. Mater., 26(2019), No. 11, pp. 1457-1466. https://doi.org/10.1007/s12613-019-1838-1
Cite this article as:
Jia-hong Zhang, Shu-ming Xing, Xiao-hui Ao, Peng Sun,  and Ru-fen Wang, Effect of Ca modification on the elemental composition, microstructure and tensile properties of Al-7Si-0.3Mg alloy, Int. J. Miner. Metall. Mater., 26(2019), No. 11, pp. 1457-1466. https://doi.org/10.1007/s12613-019-1838-1
shu
引用本文 PDF XML SpringerLink
研究论文

Effect of Ca modification on the elemental composition, microstructure and tensile properties of Al-7Si-0.3Mg alloy

  • School of Mechanical and Electronic Control Engineering, Beijing Jiaotong University, Beijing 100044, China

  • Tianjin Lizhong Alloy Group Company Limited, Tianjin 300457, China

  • 通讯作者:

    Shu-ming Xing    E-mail: smxing@bjtu.edu.cn

  • The effect of Ca addition on the elemental composition, microstructure, Brinell hardness and tensile properties of Al-7Si-0.3Mg alloy were investigated. The residual content of Ca in the alloy linearly increased with the amount of Ca added to the melt. The optimal microstructure and properties were obtained by adding 0.06wt% Ca to Al-7Si-0.3Mg alloy. The secondary dendrite arm spacing (SDAS) of the primary α phase decreased from 44.41 μm to 19.4 μm, and the eutectic Si changed from coarse plates to fine coral. The length of the Fe-rich phase (β-Al5FeSi) decreased from 30.2 μm to 3.8 μm, and the Brinell hardness can reach to 66.9. The ultimate tensile strength, yield strength, and elongation of the resulting alloy increased from 159.5 MPa, 79 MPa, and 2.5% to 212 MPa, 86.5 MPa, and 4.5%, respectively. The addition of Ca can effectively refine the primary α phase and modify the eutectic Si phase, likely because Ca enrichment at the front of the solid-liquid interface led to undercooling of the alloy, reduced the growth rate of the primary α phase, and refined the grain size. Also, it could increase the latent heat of crystallization, undercooling, and the nucleation rate of eutectic Si, which was beneficial to the improvement of the morphology of eutectic Si.
    • Research Article

    Effect of Ca modification on the elemental composition, microstructure and tensile properties of Al-7Si-0.3Mg alloy

    + Author Affiliations
      Abstract
    • The effect of Ca addition on the elemental composition, microstructure, Brinell hardness and tensile properties of Al-7Si-0.3Mg alloy were investigated. The residual content of Ca in the alloy linearly increased with the amount of Ca added to the melt. The optimal microstructure and properties were obtained by adding 0.06wt% Ca to Al-7Si-0.3Mg alloy. The secondary dendrite arm spacing (SDAS) of the primary α phase decreased from 44.41 μm to 19.4 μm, and the eutectic Si changed from coarse plates to fine coral. The length of the Fe-rich phase (β-Al5FeSi) decreased from 30.2 μm to 3.8 μm, and the Brinell hardness can reach to 66.9. The ultimate tensile strength, yield strength, and elongation of the resulting alloy increased from 159.5 MPa, 79 MPa, and 2.5% to 212 MPa, 86.5 MPa, and 4.5%, respectively. The addition of Ca can effectively refine the primary α phase and modify the eutectic Si phase, likely because Ca enrichment at the front of the solid-liquid interface led to undercooling of the alloy, reduced the growth rate of the primary α phase, and refined the grain size. Also, it could increase the latent heat of crystallization, undercooling, and the nucleation rate of eutectic Si, which was beneficial to the improvement of the morphology of eutectic Si.
      • FullText(HTML)
    • loading
      • Supplements(0)
      • References(17)
    • [1]
      E.M. Elgallad, M.F. Ibrahim, H.W. Doty, and F.H. Samuel, Microstructural characterisation of Al-Si cast alloys containing rare earth additions, Philos. Mag., 98(2018), No. 15, p. 1337.
      [2]
      J.D. Roehling, D.R. Coughlin, J.W. Gibbs, J.K. Baldwin, J.C.E. Mertens, G.H. Campbell, A.J. Clarke, and J.T. Mckeown, Rapid solidification growth mode transitions in Al-Si alloys by dynamic transmission electron microscopy, Acta Mater., 131(2017), p. 22.
      [3]
      J.G. Qiao, X.F. Liu, X.J. Liu, and X.F. Bian, Relationship between microstructures and contents of Ca/P in near-eutectic Al-Si piston alloys, Mater. Lett., 59(2005), No. 14-15, p. 1790.
      [4]
      S.S.S. Kumari, R.M. Pillai, B.C. Pai, K. Nogita, and A.K. Dahle, Influence of calcium on the microstructure and properties of an Al-7Si-0.3Mg-xFe Alloy, Metall. Mater. Trans. A, 37(2006), No. 8, p. 2581.
      [5]
      S.S.S. Kumari, R.M. Pillai, and B.C. Pai, Role of calcium in aluminium based alloys and composites, Int. Metall. Rev., 50(2013), No. 4, p. 216.
      [6]
      K. Al-Helal, Y. Wang, I. Stone, and Z.Y. Fan, Effect of Ca level on the formation of silicon phases during solidification of hypereutectic Al-Si alloys, Mater. Sci. Forum, 765(2013), p. 117.
      [7]
      H.J. Kim, Effect of calcium on primary silicon particle size in hypereutectic Al-Si alloys, Mater. Sci. Technol., 19(2003), No. 7, p. 915.
      [8]
      S.S.S. Kumari, R.M. Pillai, T.P.D. Rajan, and B.C. Pai, Effects of individual and combined additions of Be, Mn, Ca and Sr on the solidification behaviour, structure and mechanical properties of Al-7Si-0.3Mg-0.8Fe alloy, Mater. Sci. Eng. A, 460-461(2007), p. 561.
      [9]
      A. Knuutinen, K. Nogita, S.D. McDonald, and A.K. Dahle, Modification of Al-Si alloys with Ba, Ca, Y and Yb, J. Light Met., 1(2001), No. 4, p. 229.
      [10]
      T.H. Ludwig, P.L. Schaffer, and L. Arnberg, Influence of some trace elements on solidification path and microstructure of Al-Si foundry alloys, Metall. Mater. Trans. A, 44(2013), No. 8, p. 3783.
      [11]
      L. Ceschini, A. Morri, A. Morri, A. Gamberini, and S. Messieri, Correlation between ultimate tensile strength and solidification microstructure for the sand cast A357 aluminium alloy, Mater. Des., 30(2009), No. 10, p. 4525.
      [12]
      J. Zhang, Z. Fan, Y.Q. Wang, and B.L. Zhou, Effect of cooling rate on the microstructure of hypereutectic Al-Mg2Si alloys, J. Mater. Sci. Lett., 19(2000), No. 20, p. 1825.
      [13]
      W. Eidhed, Modification of β-Al5FeSi compound in recycled Al-Si-Fe cast alloy by using Sr, Mg and Cr additions, J. Mater. Sci. Technol., 24(2008), No. 1, p. 45.
      [14]
      S. Mican, R. Hirian, O. Isnard, I. Chicinaş, and V. Pop, Effect of milling conditions on the microstructure and interphase exchange coupling of Nd2Fe14B/α-Fe nanocomposites, Phys. Procedia, 75(2015), p. 1314.
      [15]
      P. Tang, W.F. Li, K. Wang, J. Du, X.Y. Chen, Y.J. Zhao, and W.Z. Li, Effect of Al-Ti-C master alloy addition on microstructures and mechanical properties of cast eutectic Al-Si-Fe-Cu alloy, Mater. Des., 115(2017), p. 147.
      [16]
      T. Kobayashi, Strength and fracture of aluminum alloys, Mater. Sci. Eng. A, 286(2000), No. 2, p. 333.
      [17]
      C. Li, X.F. Liu, and Y.Y. Wu, Refinement and modification performance of Al-P master alloy on primary Mg2Si in Al-Si-Mg alloys, J. Alloys Compd., 465(2008), No. 1-2, p. 145.
      • 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