Quality and mechanical property of aluminum joints after friction stir welding

被引：0
|
作者：
Yin K. [1 ]
Huang C. [1 ]
Wang Y. [1 ]
Wang M. [1 ]
Huang A. [1 ]
机构：
[1] School of Aeronautics and Astronautics, Sichuan University, Chengdu
来源：
Zhongnan Daxue Xuebao (Ziran Kexue Ban)/Journal of Central South University (Science and Technology) | 2018年 / 49卷 / 11期
基金：
中国国家自然科学基金;
关键词：
AA1050; Friction stir welding; Mechanical property; Weld quality;
D O I：
10.11817/j.issn.1672-7207.2018.11.006
中图分类号：
学科分类号：
摘要：
Friction stir welding (FSW) joints of AA1050 under various ratios of rotational speed to welding speed (ω/v) were studied. The effects of ω/v on surface appearance, hardness distribution, stress-strain curve and microstructures of the joints were investigated. The results show that fine surface appearance of welded joints can be obtained when ω/v is 800/100, 1 000/200 and 1 400/300. Vickers hardness of stir zone (SZ) is higher than that of base metal (BM) and the highest average Vickers hardness is 42.9. The tensile strength of SZ is also higher than that of BM and the highest ultimate tensile strength (UTS) increase by 64%, up to 105 MPa. At a constant rotation speed, the tensile strength of SZ increases while its ductility decreases with the increase of the welding speed. The welded joint with both good mechanical property and high work-hardening capacity can be obtained when ω/v is 1 400/300. The points corresponding to high welding quality distribute near the inflexion of the curve of yield strength versus heat input. © 2018, Central South University Press. All right reserved.
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页码：2677 / 2683
页数：6
相关论文
共 27 条
  • [1] Thomas W.M., Nicholas E.D., Needham J.C., Et al., Friction stir welding
  • [2] Fuller C.B., Mahoney M.W., Calabrese M., Et al., Evolution of microstructure and mechanical properties in naturally aged 7050 and 7075 Al friction stir welds, Materials Science & Engineering A, 527, pp. 223-2240, (2010)
  • [3] Squillace A., Fenzo A.D.E., Giorleo G., Et al., A comparison between FSW and TIG welding techniques: modifications of microstructure and pitting corrosion resistance in AA 2024-T3 butt joints, Journal of Materials Processing Technology, 152, pp. 97-105, (2004)
  • [4] Venkateswaran P., Reynolds A.P., Factors affecting the properties of friction stir welds between aluminum and magnesium alloys, Materials Science & Engineering A, 545, pp. 26-37, (2012)
  • [5] Naik B.S., Cao X., Wanjara P., Residual stresses and tensile properties of friction stir welded AZ31B-H24 magnesium alloy in lap configuration, Metallurgical and Materials Transactions B, 46, 4, pp. 1626-1637, (2015)
  • [6] Tan C., Jiang Z., Li L., Et al., Microstructural evolution and mechanical properties of dissimilar Al-Cu joints produced by friction stir welding, Materials & Design, 51, 5, pp. 466-473, (2013)
  • [7] Chen B., Chen K., Hao W., Et al., Friction stir welding of small-dimension Al3003 and pure Cu pipes, Journal of Materials Processing Technology, 223, pp. 48-57, (2015)
  • [8] Mishra R.S., Ma Z.Y., Friction stir welding and processing, Materials Science & Engineering R, 50, 1-2, pp. 1-78, (2005)
  • [9] Chen Y., Ding H., Li J., Et al., Influence of multi-pass friction stir processing on the microstructure and mechanical properties of Al-5083 alloy, Materials Science & Engineering A, 650, 5, pp. 281-289, (2016)
  • [10] Khodaverdizadeh H., Mahmoudi A., Heidarzadeh A., Et al., Effect of friction stir welding (FSW) parameters on strain hardening behavior of pure copper joints, Materials & Design, 35, 11, pp. 330-334, (2012)
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