Advertisement

Microstructure and Mechanical Properties of Aluminum Alloy with Ultra-high Strength Prepared by Spray Forming

  • Shuhui HuangEmail author
  • Baiqing Xiong
  • Yong’an Zhang
  • Zhihui Li
  • Xiwu Li
  • Hongwei Liu
  • Hongwei Yan
  • Lizhen Yan
  • Kai Wen
Conference paper
Part of the Springer Proceedings in Physics book series (SPPHY, volume 217)

Abstract

In this paper, Al–11Zn–3Mg–2Cu–0.2Zr alloy was prepared by spray-forming, and then it was treated by defect reduction, hot worked and heat treatment. Microstructure and mechanical properties of the aluminum alloy were researched during the whole processing by metallographic microscope, scanning electron microscope (SEM), and tensile test. Average grain size of spray-formed aluminum alloy was about 10–20 μm due to the high cooling rate closing 1000 K/s, and shrinkage porosity and cavity was inevitable in spray-formed ingot because of nitrogen as carrier. Through hot isostatic pressing and hot extrusion, the relative density increased from 87– 90% to almost 99–100%, but it decreased again to about 98% after solution, which meant some porous defects could not be eliminated thoroughly. Comparing with casting, the original grain of spray-formed ingot was much smaller, which was unsuited for plastic processing with large deformation. A large plastic deformation caused lots of recrystallization, which weakened the mechanical properties. In the areas without defects, the best properties of the spray-formed alloy were 825 MPa in tensile strength, 808 MPa in yield strength, and 9% in elongation.

Keywords

Preparation process Aluminum alloy Exceeding 800 MPa Spray forming 

References

  1. 1.
    B.Q. Xiong, Y.A. Zhang, B.H, Zhu. Research on ultra-high strength Al-11Zn-2.9Mg-1.7Cu alloy prepared by spray forming process. Mater. Sci. Forum V475–479, 2785–2788 (2005)Google Scholar
  2. 2.
    E.J. Lavernia, T.S. Srivatsan, The rapid solidification processing of materials: science, principles, technology, advances, and applications. Mater. Sci. 45, 287–325 (2010)CrossRefGoogle Scholar
  3. 3.
    Y.A. Zhang, B.H. Zhu, B.Q. Xiong, Research on ultra-high strength Al-10.8Zn-2.9Mg-l.7Cu alloys from spray forming. Chin. J. Rare Metals 27, 609–613 (2003)Google Scholar
  4. 4.
    E.J. Lavernia, J.D. Ayers, T.S. Srivatsan, Rapid solidification processing with specific application to aluminium alloys. Int. Mater. Rev. 37, 1–44 (1992)CrossRefGoogle Scholar
  5. 5.
    M. Gupta, J. Juarez-Islas, W.E. Frazier, Microstructure, excess solid solubility and elevated temperature mechanical behavior of spray-atomized and codeposited Al-Ti-SiCp. Metall. Mater. Trans. 23, 719–736 (1992)CrossRefGoogle Scholar
  6. 6.
    T.S. Srivatsan, T.S. Sudarshan, E.J. Lavernia, Processing of discontinuously-reinforced metal matrix composites by rapid solidification. Prog. Mater Sci. 39, 317–409 (1995)CrossRefGoogle Scholar
  7. 7.
    T.S. Sidhu, R.D. Agrawal, S. Prakash, Hot corrosion of some superalloys and role of high-velocity oxy-fuel coating-a review. Surf. Coat. Technol. 198, 441–446 (2005)CrossRefGoogle Scholar
  8. 8.
    A.R.E. Singer, Principles of spray rolling of metals. Metals Mater. 4, 246 (1970)Google Scholar
  9. 9.
    E.J. Lavernia, E.M. Gutierrez, J. Szekely, Spray deposition of metals. Mater. Sci. Eng. A 98, 381–394 (1988)CrossRefGoogle Scholar
  10. 10.
    E. Salamci, Spray casting. Gazi Univ. J. Sci. 17(2), 155–173 (2004)Google Scholar
  11. 11.
    P. Lensfeld, Microstructure and mechanical behavior of spray deposited Zn modified 7xxx Series Al alloys. Int. J. Rapid Solidification 8, 237–265 (1995)Google Scholar
  12. 12.
    P. Mathur, S. Annavarapu, D. Apelian, Spray casting: an integral model for process understanding and control. Mater. Sci. Eng. A 142, 261–276 (1991)CrossRefGoogle Scholar
  13. 13.
    Q. Xu, E.J. Lavernia, Influence of nucleation and growth phenomena on microstructural evolution during droplet based deposition. Acta Mater. 49, 3849–3861 (2001)CrossRefGoogle Scholar

Copyright information

© Springer Nature Singapore Pte Ltd. 2019

Authors and Affiliations

  • Shuhui Huang
    • 1
    Email author
  • Baiqing Xiong
    • 1
  • Yong’an Zhang
    • 1
  • Zhihui Li
    • 1
  • Xiwu Li
    • 1
  • Hongwei Liu
    • 1
  • Hongwei Yan
    • 1
  • Lizhen Yan
    • 1
  • Kai Wen
    • 1
  1. 1.State Key Laboratory of Nonferrous Metals and ProcessesGRIMAT Engineering Institute Co., Ltd.BeijingChina

Personalised recommendations