Microstructural evolution and mechanical properties of friction stir welded AA2017 with different initial microstructures

被引:0
作者
Mirjalili, A. [1 ]
Aval, H. Jamshidi [1 ]
Serajzadeh, S. [1 ]
Kokabi, A. H. [1 ]
机构
[1] Sharif Univ Technol, Dept Mat Sci & Engn, Tehran, Iran
关键词
Aluminum alloys; microstructure; residual stress; natural aging; mechanical properties; deformed structure; RESIDUAL-STRESSES; 6063; ALUMINUM; PRECIPITATION; BEHAVIOR;
D O I
10.1177/1464420713476400
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Residual stresses, local mechanical properties, and microstructural evolution in terms of grain structures and precipitation distribution have been studied in friction stir welding of AA2017 in T4 and T6 conditions. Microstructural studies including optical and electron microscopy were made to characterize the developed microstructures in different zones of the weldment. Furthermore, X-ray diffraction technique and digital image correlation technique were also utilized to assess residual stress and mechanical properties of the welded alloy. The results show that coarsening of semi-coherent plate-shaped precipitates and formation of incoherent spherical-shaped particles occur in heat affected and thermo-mechanical affected zones while a non-uniform grain size distribution is formed in the stir zone because of asymmetric distributions of strain rate and temperature. Moreover, the developed residual stresses in the welded samples significantly enhance the effect of subsequent natural aging.
引用
收藏
页码:34 / 44
页数:11
相关论文
共 23 条
  • [11] Liu HJ, 2005, J MATER SCI, V40, P3297, DOI [10.1007/s10853-005-2705-1, 10.1007/s10853-005-2706-0]
  • [12] Friction stir processing technology: A review
    Ma, Z. Y.
    [J]. METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 2008, 39A (03): : 642 - 658
  • [13] Properties of friction-stir-welded 7075 T651 aluminum
    Mahoney, MW
    Rhodes, CG
    Flintoff, JG
    Spurling, RA
    Bingel, WH
    [J]. METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 1998, 29 (07): : 1955 - 1964
  • [14] Friction stir welding and processing
    Mishra, RS
    Ma, ZY
    [J]. MATERIALS SCIENCE & ENGINEERING R-REPORTS, 2005, 50 (1-2) : 1 - 78
  • [15] Microstructure, mechanical properties and residual stresses as a function of welding speed in aluminium AA5083 friction stir welds
    Peel, M
    Steuwer, A
    Preuss, M
    Withers, PJ
    [J]. ACTA MATERIALIA, 2003, 51 (16) : 4791 - 4801
  • [16] Microstructural evolution of 6063 aluminum during friction-stir welding
    Sato, YS
    Kokawa, H
    Enomoto, M
    Jogan, S
    [J]. METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 1999, 30 (09): : 2429 - 2437
  • [17] Precipitation sequence in friction stir weld of 6063 aluminum during aging
    Sato, YS
    Kokawa, H
    Enomoto, M
    Jogan, S
    Hashimoto, T
    [J]. METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 1999, 30 (12): : 3125 - 3130
  • [18] TEM study of the FSW nugget in AA2195-T81
    Schneider, JA
    Nunes, AC
    Chen, PS
    Steele, G
    [J]. JOURNAL OF MATERIALS SCIENCE, 2005, 40 (16) : 4341 - 4345
  • [19] Residual stress in friction stir-welded Al sheets
    Staron, P.
    Kocak, M.
    Williams, S.
    Wescott, A.
    [J]. PHYSICA B-CONDENSED MATTER, 2004, 350 (1-3) : E491 - E493
  • [20] Residual stresses in friction stir welded Al sheets
    Staron, P
    Koçak, M
    Williams, S
    [J]. APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING, 2002, 74 (Suppl 1): : S1161 - S1162