Effects of Equal Channel Angular Pressing (ECAP) Process with an Additional Expansion-Extrusion Stage on Microstructure and Mechanical Properties of Mg–9Al–1Zn

Subject Areas : Severe Plastic Defeormation

Mahnoush Rassa ¹ , Geonik Azadkoli ² , Mohammad Eftekhari ³ , Ali Fata ⁴ , Ghader Faraji ⁵

1 - Department of Mechanical Engineering, College of Engineering, University of Tehran, Tehran, Iran
2 - Department of Mechanical Engineering, College of Engineering, University of Tehran, Tehran, Iran
3 - Department of Mechanical Engineering, College of Engineering, University of Tehran, Tehran, Iran
4 - Department of Mechanical Engineering, Faculty of Engineering, University of Hormozgan, Bandar Abbas, Iran
5 - Department of Mechanical Engineering, College of Engineering, University of Tehran, Tehran, Iran

Received: 2021-07-28 Accepted : 2021-09-05 Published : 2021-11-01

Keywords:

References:

References

1. Xu, S., et al., Dynamic microstructural changes in Mg–9Al–1Zn alloy during hot compression. Scripta Materialia, 2009. 61(3): p. 249-252.


2. Pardis, N., et al., Cyclic expansion-extrusion (CEE): A modified counterpart of cyclic extrusion-compression (CEC). Materials Science and Engineering: A, 2011. 528(25): p. 7537-7540.


3. Celotto, S. and T. Bastow, Study of precipitation in aged binary Mg–Al and ternary Mg–Al–Zn alloys using 27 Al NMR spectroscopy. Acta materialia, 2001. 49(1): p. 41-51.


4. Bursšík, J. and M. Svoboda, A HREM and analytical STEM study of precipitates in an AZ91 magnesium alloy. Microchimica Acta, 2002. 139(1): p. 39-42.


5. Braszczyńska-Malik, K., Spherical shape of γ-Mg 17 Al 12 precipitates in AZ91 magnesium alloy processed by equal-channel angular pressing. Journal of Alloys and Compounds, 2009. 487(1): p. 263-268.


6. Faraji, G., M. Mashhadi, and H. Kim, Microstructure inhomogeneity in ultra-fine grained bulk AZ91 produced by accumulative back extrusion (ABE). Materials Science and Engineering: A, 2011. 528(13-14): p. 4312-4317.


7. Siahsarani, A., et al., Microstructural, Mechanical and Corrosion Properties of AZ91 Magnesium Alloy Processed by a Severe Plastic Deformation Method of Hydrostatic Cyclic Expansion Extrusion. Metals and Materials International, 2020: p. 1-14.


8. Li, Y., et al., Achieving single-pass high-reduction rolling and enhanced mechanical properties of AZ91 alloy by RD-ECAP pre-processing. Materials Science and Engineering: A, 2021. 804: p. 140717.


9. Xu, Q., et al., Microstructure evolution of AZ91 alloy processed by a combination method of equal channel angular pressing and rolling. Journal of Magnesium and Alloys, 2020. 8(1): p. 192-198.


10. Fata, A., et al., Evaluation of Hot Tensile Behavior of Fine-Grained Mg–9Al–1Zn Alloy Tube Processed by Severe Plastic Deformation. Transactions of the Indian Institute of Metals, 2017. 70(5): p. 1369-1376.


11. Cubides, Y., et al., Enhanced mechanical properties and corrosion resistance of a fine-grained Mg-9Al-1Zn alloy: the role of bimodal grain structure and β-Mg17Al12 precipitates. Materialia, 2020. 13: p. 100840.


12. Cubides, Y., et al., Effects of dynamic recrystallization and strain-induced dynamic precipitation on the corrosion behavior of partially recrystallized Mg–9Al–1Zn alloys. Journal of Magnesium and Alloys, 2020. 8(4): p. 1016-1037.


13. Abdolvand, H., et al., Microstructure and mechanical properties of fine-grained thin-walled AZ91 tubes processed by a novel combined SPD process. Bulletin of Materials Science, 2017. 40(7): p. 1471-1479.


14. Ensafi, M., G. Faraji, and H. Abdolvand, Cyclic extrusion compression angular pressing (CECAP) as a novel severe plastic deformation method for producing bulk ultrafine grained metals. Materials Letters, 2017. 197: p. 12-16.


15. Chung, C., et al. Effect of ECAP on microstructure and mechanical properties of cast AZ91 magnesium alloy. in Journal of Physics: Conference Series. 2010: IOP Publishing.


16. Jamali, S., G. Faraji, and K. Abrinia, Evaluation of mechanical and metallurgical properties of AZ91 seamless tubes produced by radial-forward extrusion method. Materials Science and Engineering: A, 2016. 666: p. 176-183.


17. Wang X, Wu M, Ma W, Lu Y, Yuan S. Achieving superplasticity in AZ31 magnesium alloy processed by hot extrusion and rolling. Journal of Materials Engineering and Performance. 2016 Jan;25(1):64-7.


18. Sun Y, Fu L, Fu Z, Shan A, Lavernia EJ. Enhanced thermal stability and ductility in a nanostructured Ni-based alloy. Scripta Materialia. 2017;141: p. 1-5.


19. Figueiredo RB, Langdon TG. Grain refinement and mechanical behavior of a magnesium alloy processed by ECAP. Journal of materials science. 2010;45(17): p. 4827-36.


20. Ebrahimi GR, Maldar AR, Ebrahimi R, Davoodi A. The effect of homogenization on microstructure and hot ductility behaviour of AZ91 magnesium alloy. Kov. Mater. 2010;48: p. 277-84.


21. Siahsarani A, Samadpour F, Mortazavi MH, Faraji G. Microstructural, Mechanical and Corrosion Properties of AZ91 Magnesium Alloy Processed by a Severe Plastic Deformation Method of Hydrostatic Cyclic Expansion Extrusion. Metals and Materials International. 2021;27(8): p. 2933-46.