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Effect of heat treatment and extrusion on wear properties of AZ91-Pr alloy

  • Ning Li and Hong Yan
Published/Copyright: October 23, 2019
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International Journal of Materials Research
From the journal International Journal of Materials Research Volume 110 Issue 11

Abstract

The effects of extrusion and T6 heat treatment on the microstructure of AZ91-Pr alloy and its wear properties under different applied loads were investigated. The extrusion refined the grains by dynamic recrystallization and grain breakage. The T6 heat treatment resulted in a more uniform distribution of β-Mg17Al12. Compared with the as-cast alloy, the hardness of the extruded alloy was increased by 18.8 %, and the T6 heat-treated alloy was increased by 58.4 %. The wear rate and friction coefficient of the three alloys increased with load. Under the same conditions, the values of the alloy after T6 treatment are the lowest and the values of the as-cast alloy are the highest. Abrasion and delamination were the wear mechanisms at the load of 30 N, and delamination and oxidation were the wear mechanisms at the load of 60 N. The wear mechanisms at 90 N load were plastic deformation and delamination.

Keywords: Heat treatment; Extrusion; AZ91; Wear resistance; Wear mechanisms
∗Correspondence address, Hong Yan, Nanchang University, School of Mechanical Electrical Engineering, Nanchang University, Nanchang 330031, P. R. China, Tel.: +86-791-8396-9633, Fax: +86-791-8396-9622, E-mail:

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Received: 2019-01-31
Accepted: 2019-06-27
Published Online: 2019-10-23
Published in Print: 2019-11-12

© 2019, Carl Hanser Verlag, München

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https://doi.org/10.3139/146.111839
Keywords for this article
Heat treatment; Extrusion; AZ91; Wear resistance; Wear mechanisms

Articles in the same Issue

  1. Contents
  2. Contents
  3. Editorial
  4. Note from the Editor-in-Chief
  5. Original Contributions
  6. The softening factor cb of commercial titanium alloy wires
  7. A comparative assessment of cyclic deformation behavior of SA333 Gr-6 steel at ambient and elevated temperatures
  8. Effects of Ni and Al on the Cu-precipitation in ferritic Fe–Cu–M (M = Ni or Al) alloy
  9. Effect of manganese on the microstructure and mechanical properties of magnesium alloys
  10. Effect of heat treatment and extrusion on wear properties of AZ91-Pr alloy
  11. Effect of anodization treatment on the mechanical properties and fatigue behavior of AA2017-T4 aluminum alloy Al–Cu–Mg1
  12. Microstructural and tribological characterization of molybdenum–molybdenum carbide structures produced by spark plasma sintering
  13. Investigation of indentation and dry sliding wear behaviour of Al-12.6 wt.% Si-10 wt.% TiB2 composites produced by sequential milling and pressureless sintering
  14. Enthalpies of mixing in ternary Ce–Cu–Sb liquid alloys
  15. Effect of in-situ formation of AlP on solidification of hypereutectic Al–Si alloy
  16. Complex-shaped high speed steel with high mechanical performance fabricated by gelcasting sintering
  17. Internal electromagnetic stirring method for preparing a large-sized aluminum alloy billet
  18. DGM News
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