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The Microstructure Evolution of Al–Mg–Si–Mn–Er–Zr Alloy During Homogenization

  • Xiang Zhang
  • Hui Huang
  • Xiaoli Liu
  • Yifei Liu
  • Hongbo Wang
  • Shengping Wen
  • Kunyuan Gao
  • Xiaolan Wu
Conference paper

Abstract

The formation of non-equilibrium intermetallic phases during solidification significantly deteriorates the mechanical properties of Al–Mg–Si–Mn–Zr–Er alloy, but homogenization heat treatment can effectively reduce these residual phases. Therefore, it is necessary to study the evolution of these non-equilibrium intermetallic phases during different homogenization treatment. In this study, the methods we used are OM, SEM in combination with EDS, XRD and TEM. The results showed that non-equilibrium intermetallic phases between grains are mainly Al0.5Fe3Si0.5, Al0.7Fe3Si0.3 and Al5Mn12Si7. After homogenization, the main residual phase is Al5Mn12Si7. Compared with single homogenization, two-stage homogenization can effectively reduce the homogenization time and is good for the precipitation of fined Al3(Er, Zr) particles.

Keywords

Al–Mg–Si–Mn–Zr–Er alloy Homogenization Microstructure 

Notes

Acknowledgements

The research is supported in part by the National Key Research and Development Program of China (2016YFB0300804 and 2016YFB0300801), National Natural Science Foundation of China (No. 51671005), Beijing Natural Science Foundation (2162006), National Natural Science Fund for Innovative Research Groups (51621003) and Program on Jiangsu Key Laboratory for Clad Materials (BM2014006).

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Copyright information

© Springer Nature Singapore Pte Ltd. 2018

Authors and Affiliations

  • Xiang Zhang
    • 1
  • Hui Huang
    • 1
  • Xiaoli Liu
    • 2
  • Yifei Liu
    • 2
  • Hongbo Wang
    • 2
  • Shengping Wen
    • 1
  • Kunyuan Gao
    • 1
  • Xiaolan Wu
    • 1
  1. 1.Materials Science and EngineeringBeijing University of TechnologyBeijingChina
  2. 2.Cssc Huangpu Wenchong Shipbuilding Company LimitedGuangzhouChina

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