Microstructure and Mechanical Properties of Self-Reacting FrictionStir Welding of 2219 Aluminium Alloy
CSTR:
  • Article
  • | |
  • Metrics
  • |
  • Reference [14]
  • |
  • Related
  • |
  • Cited by [0]
  • | |
  • Comments
    Abstract:

    An extensive investigation was carried out on the SR-FSW of 2219aluminium alloy with the thickness
    of 6 mm, and the weld appearances, microstructure and mechanical properties of the SR-FSW joint has been analyzed.
    The results indicated that the SR-FSW joint had excellent top and underside appearances without inner defects,
    distortion and seam thinning if the parameters were carefully chosen. Typical macrosections of the joint were slightly
    hourglass shpaed,and the width of the top and underside surface was slightly greater than the mid-thickness of the
    joint. As analyzed, the macrosection of the joint was related with the change of the SRPT, heat production and heat
    trasfer. The microstructure of the joint also consisted of nugget zone, thermal-mechanically affected zone, heat affected
    zone, and within each zone, the microstructure was the same as C-FSW joint. The SR-FSW joint and C-FSW joint
    had the similar hardness distribution with the typical “W” type, but the former had no anisotropic. The mechanical
    property shown that the tensile strength of the joint can reach 318. 3 MPa, and the ductility can get to 5. 5%. The
    fracture mechanisium of the joint was ductile fracture.

    Reference
    [1] Edwards R, Sylva G. Recent advances in welding of aluminium
    alloys using a self-reacting pin tool(SRPT) approach
    with application examples[C] ∥Proceedings of 7th International
    Conference on thrends in welding Research, Georgia, USA, 2005
    [2] 韩文妥,许鸿吉,李光,等. 几种新型搅拌摩擦焊技术
    [J]. 航空制造技术,2008(21):48-51
    [3] 张健,李光,李从卿,等. 2219-T4 铝合金双轴肩FSW
    与常规FSW 接头性能对比研究[J]. 焊接,2008(11):50-53
    [4] Thomas W M, Wiesner C S. Recent developments of
    FSW technologies: Evaluation of root defects, compostite refractory
    toos for steel joining and one-pass welding of thick sections using
    self-reacting bobbin tools[C]∥8th International Conference
    on Trends in Welding Research, Pine Mountain, GA, United
    states,2008
    Related
Get Citation
Share
Article Metrics
  • Abstract:
  • PDF:
  • HTML:
  • Cited by:
History
  • Online: November 28,2016
Article QR Code