The role of friction stir welding tool on material flow and weld formation

被引：362
作者：
Kumar, K. [1 ]
Kailas, Satish V. [1 ]
机构：
[1] Indian Inst Sci, Dept Mech Engn, Bangalore 560012, Karnataka, India
来源：
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2008年 / 485卷 / 1-2期
关键词：
friction stir welding; material flow; mechanism; defects; tool design;
D O I：
10.1016/j.msea.2007.08.013
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
In this investigation an attempt has been made to understand the mechanism of friction stir weld formation and the role of friction stir welding tool in it. This has been done by understanding the material flow pattern in the weld produced in a special experiment, where the interaction of the friction stir welding tool with the base material is continuously increased. The results show that there are two different modes of material flow regimes involved in the friction stir weld formation; namely "pin-driven flow" and "shoulder-driven flow". These material flow regimes merge together to form a defect-free weld. The etching contrast in these regimes gives rise to onion ring pattern in friction stir welds. In addition to that based on the material flow characteristics a mechanism of weld formation is proposed. (C) 2007 Elsevier B.V. All rights reserved.
引用
收藏
页码：367 / 374
页数：8
相关论文
共 30 条
  • [1] Design of the friction stir welding tool using the continuum based FEM model
    Buffa, G
    Hua, J
    Shivpuri, R
    Fratini, L
    [J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2006, 419 (1-2): : 381 - 388
  • [2] 3-Dimensional CFD modelling of flow round a threaded friction stir welding tool profile
    Colegrove, PA
    Shercliff, HR
    [J]. JOURNAL OF MATERIALS PROCESSING TECHNOLOGY, 2005, 169 (02) : 320 - 327
  • [3] Colligan K, 1999, WELD J, V78, p229S
  • [4] Influence of predeformation on ageing in an Al-Zn-Mg alloy -: I.: Microstructure evolution and mechanical properties
    Deschamps, A
    Livet, F
    Bréchet, Y
    [J]. ACTA MATERIALIA, 1998, 47 (01) : 281 - 292
  • [5] Influences of pin profile and rotational speed of the tool on the formation of friction stir processing zone in AA2219 aluminium alloy
    Elangovan, K.
    Balasubramanian, V.
    [J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2007, 459 (1-2): : 7 - 18
  • [6] Material flow in FSW of AA7075-T6 butt joints: Continuous dynamic recrystallization phenomena
    Fratini, L.
    Buffa, G.
    Palmeri, D.
    Hua, J.
    Shivpuri, R.
    [J]. JOURNAL OF ENGINEERING MATERIALS AND TECHNOLOGY-TRANSACTIONS OF THE ASME, 2006, 128 (03): : 428 - 435
  • [7] Flow patterns during friction stir welding
    Guerra, A
    Schmidt, C
    McClure, JC
    Murr, LE
    Nunes, AC
    [J]. MATERIALS CHARACTERIZATION, 2002, 49 (02) : 95 - 101
  • [8] Friction-stir welding effects on microstructure and fatigue of aluminum alloy 7050-T7451
    Jata, KV
    Sankaran, KK
    Ruschau, JJ
    [J]. METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 2000, 31 (09): : 2181 - 2192
  • [9] Three defect types in friction stir welding of aluminum die casting alloy
    Kim, YG
    Fujii, H
    Tsumura, T
    Komazaki, T
    Nakata, K
    [J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2006, 415 (1-2): : 250 - 254
  • [10] On the formation of onion rings in friction stir welds
    Krishnan, KN
    [J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2002, 327 (02): : 246 - 251
123