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Role of axial thrust in the formation of microstructure and fracture surface of the weld zone in friction stir welded AA6063 aluminium alloy

  • T. P. Suresh and S. Sampathkumar
Published/Copyright: January 11, 2014
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International Journal of Materials Research
From the journal International Journal of Materials Research Volume 105 Issue 1

Abstract

AA6063 is an aluminium alloy with moderate strength. This type of alloy is widely used in the construction and automotive industries. In this article, the role of axial thrust in the formation of microstructure and fracture surface of the weld zone in friction stir welded AA6063 aluminium alloy is discussed. Butt joints were fabricated at five axial thrusts of 4 kN, 5 kN, 6 kN, 7 kN and 8 kN using an unthreaded tool pin. The rotational speed and translational velocity of the tool were maintained constant at 1500 revolutions per minute and 25 mm min−1 respectively. Specimens were prepared from the joints, and tensile testing was carried out. The ultimate tensile strength and percentage of elongation were calculated. Vickers hardness was measured in the weld zone at mid-thickness on the advancing and retreating sides. The microstructure and fracture surface of the joints were also examined. It was found that the joint produced at the axial thrust of 6 kN exhibited superior ultimate tensile strength, higher percentage of elongation and higher micro-hardness. This joint exhibited a superior quality weld zone without kissing bond and tunnel defects.

Keywords: Friction stir welding; Ultimate tensile strength; Kissing bond; Fracture surface
* Correspondence address, T. P. Suresh, Flat No.3, 121/46, Justice Ramasamy Road, Kamaraj Avenue Second Street, Adyar, Chennai-600020, India, Tel.: +91 44 24425788, Mobile No.: +91 9941975790, E-mail:

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Received: 2013-01-21
Accepted: 2013-07-11
Published Online: 2014-01-11
Published in Print: 2014-01-09

© 2014, Carl Hanser Verlag, München

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https://doi.org/10.3139/146.110998
Keywords for this article
Friction stir welding; Ultimate tensile strength; Kissing bond; Fracture surface

Articles in the same Issue

  1. Contents
  2. Contents
  3. Original Contributions
  4. Microwave absorbing materials based on polyaniline composites: a review
  5. Atomic mobilities in fcc Cu–Mn–Ni–Zn alloys and their characterizations of uphill diffusion and zero-flux plane phenomena
  6. Synthesis and characterization of nanocristalline Fe-40 at.% Si alloy prepared by high energy ball milling
  7. An investigation of the microstructure and hydrogenation/dehydrogenation properties of ball-milled CeMg12 alloys with Ni powders
  8. Nanoscratch characterization of indium nitride films
  9. Role of axial thrust in the formation of microstructure and fracture surface of the weld zone in friction stir welded AA6063 aluminium alloy
  10. Microstructures and corrosion resistance of three typical superlight Mg–Li alloys
  11. The effect of magnetron-deposited Al2O3 coating on the corrosion resistance of Ti–Al alloys in a 9 %O2 + 0.2 %HCl + 0.08 %SO2 + N2 atmosphere
  12. Homogenization of direct chill cast AlSi1MgMn billets
  13. Effect of rare earth Y addition on two-phase Ni53Mn22Co6Ga19 high-temperature shape memory alloy
  14. Thermal treatment induced transition from Zn3(OH)2(BDC)2 (MOF-69c) to Zn4O(BDC)3 (MOF-5)
  15. Thermal investigation of alumina-based pastes and refractory mixturesd
  16. Short Communications
  17. One-step magnetic modification of non-magnetic solid materials
  18. DGM News
  19. DGM News
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