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Microstructure Evolution of Al-0.35%Si-0.2%Mg-0.3%Ce Alloy During Hot Extrusion and Its Contributions to Performances

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Abstract

Microstructure evolution of Al-0.35 wt.%Si-0.2 wt.%Mg-0.3 wt.%Ce alloy during hot extrusion and its contributions to mechanical properties and conductivity are investigated in this paper. Results show that, with a significant deformation (an extrusion ratio of 36), complete recrystallization occurs at the extrusion temperature ranging from 460 to 560 °C, and the grain size is increased only slightly with the temperature. However, when the rod is extruded at 510 °C with a small ratio of 16, only local and incomplete recrystallization occurs, and the grain structure is highly non-uniform. With the same large deformation (a ratio of 36), the rod extruded at 460 °C has the lowest strength. The severely occurred dynamic precipitation of Mg2Si phase is responsible for it. For the rod extruded at 510 °C with the small deformation (a ratio of 16), the highly non-uniform grain structure leads to a considerably reduction in all indexes of tensile properties. It is found that the conductivity of samples with the same ratio of 36 is decreased considerably with the extrusion temperature. The combined effects of the dynamic precipitation and lattice vacancy population on lattice distortion are responsible for it. In the rod extruded at 510 °C with the small ratio of 16, the retained large number of dislocations and sub-grains leads to a significant reduction in conductivity, compared to the one with the large ratio of 36. An excellent combination of strength and conductivity could be obtained by extruding at 510 °C with a ratio of 36. In this case, uniform and completely recrystallized grain structure is produced.

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References

  1. S. Karabay, M. Yilmaz, and M. Zeren, Investigation of Extrusion Ratio Effect on Mechanical Behaviour of Extruded Alloy AA-6101 from the Billets Homogenised-Rapid Quenched and As-Cast Conditions, J. Mater. Process. Technol., 2005, 160, p 138–147

    Article  Google Scholar 

  2. D. Ke, L. Hengcheng, J. Qiumin, and T. Yun, Effect of Hot Extrusion on Mechanical Properties and Microstructure of Near Eutectic Al-12.0% Si-0.2% Mg Alloy, Mater. Sci. Eng. A, 2010, 527, p 6887–6892

    Article  Google Scholar 

  3. S.H. Hong, K.H. Chung, and C.H. Lee, Effects of Hot Extrusion Parameters on the Tensile Properties and Microstructures of SiCw-2124Al Composites, Mater. Sci. Eng. A, 1996, 206, p 225–232

    Article  Google Scholar 

  4. O. Sitdikov, T. Sakai, H. Miura, and C. Hama, Temperature Effect on Fine-Grained Structure Formation in High-Strength Al Alloy 7475 During Hot Severe Deformation, Mater. Sci. Eng. A, 2009, 516, p 180–188

    Article  Google Scholar 

  5. Y. Wang, H. Liao, Y. Wu, and J. Yang, Effect of Si Content on Microstructure and Mechanical Properties of Al-Si-Mg Alloys, Mater. Des., 2014, 53, p 634–638

    Article  Google Scholar 

  6. B. Adamczyk-Cieślak, J. Mizera, and K.J. Kurzydłowski, Microstructures in the 6060 Aluminium Alloy After Various Severe Plastic Deformation Treatments, Mater. Charact., 2011, 62, p 327–332

    Article  Google Scholar 

  7. H. Yamagata, Dynamic Recrystallization and Dynamic Recovery in Pure Aluminum at 583 K, Acta Metall. Mater., 1995, 43, p 723–729

    Article  Google Scholar 

  8. H. Yamagata, Microstructural Evolution of Single-Crystalline Aluminum During Multipeak Stress Oscillation at 623 K, Scripta Metall. Mater., 1992, 27, p 1157–1160

    Article  Google Scholar 

  9. T.G. Langdon, The Principles of Grain Refinement in Equal-Channel Angular Pressing, Mater. Sci. Eng. A, 2007, 462, p 3–11

    Article  Google Scholar 

  10. M. Das, G. Das, M. Ghosh, M. Wegner, V. Rajnikant, S. GhoshChowdhury, and T.K. Pal, Microstructures and Mechanical Properties of HPT Processed 6063 Al Alloy, Mater. Sci. Eng. A, 2012, 558, p 525–532

    Article  Google Scholar 

  11. S. Kaneko, K. Murakami, and T. Sakai, Effect of the Extrusion Conditions on Microstructure Evolution of the Extruded Al-Mg-Si-Cu Alloy Rods, Mater. Sci. Eng. A, 2009, 500, p 8–15

    Article  Google Scholar 

  12. L. Hu, Z. Li, and E. Wang, Influence of Extrusion Ratio and Temperature on Microstructure and Mechanical Properties of 2024 Aluminium Alloy Consolidated from Nanocrystalline Alloy Powders via Hot Hydrostatic Extrusion, Powder Metall., 1999, 42, p 153–156

    Article  Google Scholar 

  13. C. Marioara, S. Andersen, J. Jansen, and H. Zandbergen, The Influence of Temperature and Storage Time at RT on Nucleation of the β″ Phase in a 6082 Al-Mg-Si alloy, Acta Mater., 2003, 51, p 789–796

    Article  Google Scholar 

  14. S. Panigrahi and R. Jayaganthan, Effect of Rolling Temperature on Microstructure and Mechanical Properties of 6063 Al Alloy, Mater. Sci. Eng. A, 2008, 492, p 300–305

    Article  Google Scholar 

  15. Y. Wang, P. Sun, P. Kao, and C. Chang, Effect of Deformation Temperature on the Microstructure Developed in Commercial Purity Aluminum Processed by Equal Channel Angular Extrusion, Scripta Mater., 2004, 50, p 613–617

    Article  Google Scholar 

  16. M. Das and G. Das, Role of Dynamic Precipitation on the Strengthening Mechanism of Cryorolled 6063 Al Alloy, Trans. Indian Inst. Met., 2011, 64, p 75–79

    Article  Google Scholar 

  17. M. Hörnqvist and B. Karlsson, Dynamic Strain Ageing and Dynamic Precipitation in AA7030 During Cyclic Deformation, Proc. Eng., 2010, 2, p 265–273

    Article  Google Scholar 

  18. H.J. Roven, M. Liu, and J.C. Werenskiold, Dynamic Precipitation During Severe Plastic Deformation of an Al-Mg-Si Aluminium Alloy, Mater. Sci. Eng. A, 2008, 483, p 54–58

    Article  Google Scholar 

  19. Y.N. Wu, H.C. Liao, Y.B. Liu, and K.X. Zhou, Dynamic Precipitation of Mg2Si Induced by Temperature and Strain and Its Impact on Microstructure and Mechanical Properties of Near Eutectic Al-Si-Mg-V Alloy, Mater. Sci. Eng. A, 2014, 614, p 162–170

    Article  Google Scholar 

  20. Y.N. Wu, H.C. Liao, and K.X. Zhou, Effect of Minor Addition of Vanadium on Mechanical Properties and Microstructures of As-Extruded Near Eutectic Al-Si-Mg Alloy, Mater. Sci. Eng. A, 2014, 602, p 41–48

    Article  Google Scholar 

  21. P. Apps, J.R. Bowen, and P. Prangnell, The Effect of Coarse Second-Phase Particles on the Rate of Grain Refinement During Severe Deformation Processing, Acta Mater., 2003, 51, p 2811–2822

    Article  Google Scholar 

  22. S. Samaras and G. Haidemenopoulos, Modelling of Microsegregation and Homogenization of 6061 Extrudable Al-Alloy, J. Mater. Process. Technol., 2007, 194, p 63–73

    Article  Google Scholar 

  23. H. Gao, S. Liu, Y. Zhou, W. Zhou, G. Wang, and C. Li, Study on the Effect of Gas Refinement on Aluminium Resistivity, Tezhong Zhuzao Ji Youse Hejin, 1999, 19(6), p 18–19

    Google Scholar 

  24. R. Wang, The Physical Properties of Metal Materials, Metallurgical Industry Press, Beijing, 1985, p 44–50

    Google Scholar 

  25. S. Karabay, Influence of AlB2 Intermetallic on Elimination of Incoherent Precipitation in Artificial Aging of Wires Drawn from Redraw Rod Extruded from Billets Cast of Alloy AA-6101 by Vertical Direct Chill Casting, Mater. Des., 2008, 29, p 1364–1375

    Article  Google Scholar 

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Acknowledgments

The authors would like to thank Prof. Ye Pan for the valuable discussion. The work was funded by Jiangsu Graduated-student Innovation Program of China (CXZZ-0146) and Scientific Research Foundation of Graduate School of Southeast University for financial support of the project (YBJJ1235).

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Authors and Affiliations

  1. School of Materials Science and Engineering, Southeast University, Jiangsu Key Laboratory for Advanced Metallic Materials, District of Jiangning, Campus of Southeast University, Nanjing, 211189, China

    Hengcheng Liao, Yuna Wu & Yongjin Wang

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  1. Hengcheng Liao
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  2. Yuna Wu
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  3. Yongjin Wang
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Correspondence to Hengcheng Liao.

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Liao, H., Wu, Y. & Wang, Y. Microstructure Evolution of Al-0.35%Si-0.2%Mg-0.3%Ce Alloy During Hot Extrusion and Its Contributions to Performances. J. of Materi Eng and Perform 24, 2503–2510 (2015). https://doi.org/10.1007/s11665-015-1485-2

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  • DOI: https://doi.org/10.1007/s11665-015-1485-2

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