Structure and Mechanical Property of Friction-Stir Weld Joint of 2195-T8 Al-Li Alloy Plate

被引：5
|
作者：
Li Jinfeng [1 ]
Chen Yonglai [2 ]
Zhang Xuhu [2 ]
Zheng Ziqiao [1 ]
机构：
[1] Cent S Univ, Changsha 410083, Hunan, Peoples R China
[2] Aerosp Res Inst Mat & Proc Technol, Beijing 100076, Peoples R China
来源：
RARE METAL MATERIALS AND ENGINEERING | 2018年 / 47卷 / 03期
基金：
国家高技术研究发展计划(863计划);
关键词：
2195 Al-Li alloy; friction stir weld (FSW); mechanical property; structure; ROTATIONAL SPEED; ALUMINUM-ALLOY; PIN PROFILE; TENSILE-STRENGTH; TOOL; MICROSTRUCTURE; PARAMETERS;
D O I：
暂无
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The tensile properties of friction stir weld (FSW) joint of 2195-T8 Al-Li alloy plate with 5 mm thickness prepared by straight-cylindrical (SC) pin and threaded-cylindrical (TC) pin at different rotational speeds and welding speeds were investigated. The structures of the FSW joint were detected. Results show that when prepared by SC pin at improper welding speed, continuous hole is formed in the FSW joint along the welding direction, leading to lower joint strength. TC pin alleviates the formation of hole in the weld, and the joint strength is enhanced with the rotational speed increasing from 700 to 1100 r/min at a given welding speed of 120 mm/min. The grains in the nugget zone (NZ) are recrystallized, but their size is inhomogeneous. The precipitates of T1 (Al2CuLi) and theta' (Al2Cu) in the NZ are completely dissolved. All theta' precipitates but most T1 precipitates are dissolved in the thermo-mechanically affected zone (TMAZ). Meanwhile, dislocations are formed in the NZ.
引用
收藏
页码：780 / 787
页数：8
相关论文
共 50 条
  • [1] The evolution of precipitation and microstructure in friction stir welded 2195-T8 Al-Li alloy
    Qin, Hailong
    Zhang, Hua
    Wu, Huiqiang
    MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2015, 626 : 322 - 329
  • [2] Structure and corrosion behavior of friction stir weld joint of 2195 Al-Li alloy
    Ma Y.
    Yang Z.
    Li J.
    Hanjie Xuebao/Transactions of the China Welding Institution, 2019, 40 (10): : 142 - 147
  • [3] Microstructures and properties of friction-stir welded joint of 2195 Al-Li alloy
    Shu B.
    Guo X.-M.
    Zhang C.-X.
    Hangkong Cailiao Xuebao/Journal of Aeronautical Materials, 2010, 30 (04): : 12 - 15
  • [4] Effect of tool traverse speed on joint line remnant and mechanical properties of friction stir welded 2195-T8 Al-Li alloy joints
    Zhang, Qingsong
    Yan, An
    Chen, Ke
    Dong, Fengbo
    Jia, Hongde
    Wang, Min
    HIGH TEMPERATURE MATERIALS AND PROCESSES, 2023, 42 (01)
  • [5] Mechanical properties, corrosion and microstructure distribution of a 2195-T8 Al-Li alloy TIG welded joint
    Huang, Yang
    Liu, Ping-li
    Xiang, Hui
    Deng, San-xi
    Guo, You-jie
    Li, Jin-feng
    JOURNAL OF MANUFACTURING PROCESSES, 2023, 90 : 151 - 165
  • [6] A feasible operational parameter window for enhancement of welding speed in friction stir welding of 2195-T8 Al-Li alloy
    Wang, Z. L.
    Wang, B. B.
    Zhang, Z.
    Xue, P.
    Liu, F. C.
    Ni, D. R.
    Xiao, B. L.
    Ma, Z. Y.
    SCIENCE AND TECHNOLOGY OF WELDING AND JOINING, 2023, 28 (08) : 679 - 688
  • [7] Residual Stress Effects on Crack Growth in Nugget of Al-Li Alloy 2195-T8 Friction Stir Welded Joints
    Ma, Yu E.
    Wang, LiNing
    Liu, Baoqi
    APPLIED MECHANICS AND MECHANICAL ENGINEERING II, PTS 1 AND 2, 2012, 138-139 : 646 - 650
  • [8] Friction stir welding joints of 2195-T8 Al-Li alloys: Correlation of temperature evolution, microstructure and mechanical properties
    Chen Peng
    Chen Jing
    Qin Siyi
    Zou Siqi
    Song Shoubo
    Jiang Ting
    Zhang Zhiqing
    Jia Zhihong
    Liu Qing
    MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2021, 823
  • [9] Effect of rotation speed on microstructure evolution and mechanical properties of nugget zone in 2195-T8 Al-Li alloy friction stir welding joints
    Chen, Peng
    Zou, Siqi
    Chen, Jing
    Qin, Siyi
    Yang, Qingbo
    Zhang, Zhiqing
    Jia, Zhihong
    Zhang, Ling
    Jiang, Ting
    Liu, Qing
    MATERIALS CHARACTERIZATION, 2021, 176
  • [10] Thickness Effect of 2195 Al-Li Alloy Friction Stir Weld Fracture Toughness
    Song, Kejin
    Liang, Peichen
    Fu, Xuesong
    Hu, Zhenggen
    Chen, Guoqing
    Zhou, Wenlong
    MATERIALS, 2024, 17 (15)
12345