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The anisotropy of deformation for friction stir processed Mg alloy due to the existence of onion rings

  • Du Xinghao and Wu Baolin
Published/Copyright: March 1, 2013
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International Journal of Materials Research
From the journal International Journal of Materials Research Volume 99 Issue 2

Abstract

In the present study, it is found that one-pass friction stir processed AZ61 alloy exhibits inferior deformation ability along the longitudinal direction compared with the transverse direction at high temperatures. Based on observation of microstructure and fracture surface, premature onion ring splitting is suggested to be mainly responsible for this anisotropy of deformation behavior. Furthermore, the homogeneous microstructure from multi-pass friction stir processing can cure the premature onion ring splitting and then exhibit isotropic high-temperature superplastic deformation behavior.

Keywords:: Magnesium alloys; Friction stir welding; Superplasticity; Onion splitting
2 Correspondence address: Prof. Wu Baolin, Department of Materials Engineering, Shenyang Institute of Aeronautical Engineering, Shenyang, 110034, PRC, Tel.: +86 24 86 141 696. E-mail:

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Received: 2007-04-11
Accepted: 2007-10-23
Published Online: 2013-03-01
Published in Print: 2008-02-01

© 2008, Carl Hanser Verlag, Munich

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https://doi.org/10.3139/146.101615
Keywords for this article
Magnesium alloys; Friction stir welding; Superplasticity; Onion splitting

Articles in the same Issue

  1. Contents
  2. Contents
  3. Editorial
  4. IJMR wishes all its readers and contributors a belated Happy New Year
  5. Basic
  6. Experimental study of the phase relations in the Fe–Zn–Cr system at 600°C
  7. Thermodynamic description of the ternary Pd–Sn–Zn system
  8. The morphology of nitrided iron–chromium alloys; influence of chromium content and nitrogen supersaturation
  9. The surface tension and density of Ag–Bi–Sn alloys
  10. Density and thermal expansion of liquid binary Al–Ag and Al–Cu alloys
  11. Hardening precipitation and mechanical properties in new Mg–Mn–Y–Gd alloys
  12. On recrystallization texture formation in polycrystalline fcc alloys with low stacking fault energies
  13. A numerical study of grain size effects on the strength and elongation of Al polycrystals using strain gradient plasticity theory
  14. Applied
  15. Thermodynamic simulation of the Bayer process
  16. The anisotropy of deformation for friction stir processed Mg alloy due to the existence of onion rings
  17. A study of the Si-phase growth mechanismin thixocast (A356) alloy during hot deformation
  18. Study of hydrogen absorption of aluminum melt
  19. Modelling of work-hardening behaviour for laser welded magnesium alloy
  20. Tribological behavior of short carbon fiber or hybrid with SiCp reinforced Al alloy composites
  21. Elevated temperature compressive behavior of Nb-22Ti-16Si-7Cr-3Al-3Ta-2Hf alloy with minor Ho addition
  22. Notifications
  23. News
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