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Journal of Materials Engineering and Performance

, Volume 27, Issue 4, pp 1714–1724 | Cite as

Mechanical Properties and Wear Behavior of AA5182/WC Nanocomposite Fabricated by Friction Stir Welding at Different Tool Traverse Speeds

  • Moslem Paidar
  • Ali Asgari
  • Olatunji Oladimeji Ojo
  • Abbas Saberi
Article

Abstract

Grain growth inhibition at the heat-affected zone, improved weld strength and superior tribological properties of welds are desirable attributes of modern manufacturing. With the focused on these attributes, tungsten carbide (WC) nanoparticles were employed as reinforcements for the friction stir welding of 5-mm-thick AA5182 aluminum alloy by varying tool traverse speeds. The microstructure, microhardness, ultimate tensile strength, fracture and wear behavior of the resultant WC-reinforced welds were investigated, while unreinforced AA5182 welds were employed as controls for the study. The result shows that the addition of WC nanoparticles causes substantial grain refinement within the weld nugget. A decrease in traverse speed caused additional particle fragmentation, improved hardness value and enhanced weld strength in the reinforced welds. Improved wear rate and friction coefficient of welds were attained at a reduced traverse speed of 100 mm/min in the WC-reinforced welds. This improvement is attributed to the effects of reduced grain size/grain fragmentation and homogeneous dispersion of WC nanoparticles within the WC-reinforced weld nugget.

Keywords

AA5182/WC nanocomposite friction stir welding mechanical properties microstructural characteristics WC nanoparticles 

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Copyright information

© ASM International 2018

Authors and Affiliations

  • Moslem Paidar
    • 1
  • Ali Asgari
    • 1
  • Olatunji Oladimeji Ojo
    • 2
  • Abbas Saberi
    • 3
  1. 1.Department of Materials EngineeringIslamic Azad University, South Tehran BranchTehranIran
  2. 2.Department of Mechanical Engineering ScienceThe Federal University of Technology AkureAkureNigeria
  3. 3.Advanced Materials Research Center, Materials Engineering DepartmentNajafabad Branch, Islamic Azad UniversityNajafabadIran

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