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ZHOU Li, ZHANG Renxiao, SHU Fengyuan, HUANG Yongxian, FENG Jicai. Microstructure and mechanical properties of friction stir welded joint of Q235 steel[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2019, 40(3): 80-84. DOI: 10.12073/j.hjxb.2019400076
Citation: ZHOU Li, ZHANG Renxiao, SHU Fengyuan, HUANG Yongxian, FENG Jicai. Microstructure and mechanical properties of friction stir welded joint of Q235 steel[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2019, 40(3): 80-84. DOI: 10.12073/j.hjxb.2019400076
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Microstructure and mechanical properties of friction stir welded joint of Q235 steel

  • 1. State Key Laboratory of Advanced Welding and Joining, Harbin Institute of Technology, Harbin 150001, China;

  • 2. Shandong Provincial Key Laboratory of Special Welding Technology, Harbin Institute of Technology at Weihai, Weihai 264209, China

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  • Received Date: January 09, 2018
    Graphical Abstract
    • Abstract
  • 3 mm thick Q235 steel was friction stir welded using W-Re pin tool at traverse speed of 100 mm/min and tool rotational speed of 450 r/min. The microstructure and mechanical properties of joints were analyzed. The well formed joint without surface defects could be obtained. Tool wear and oxidation occurred after welding. Four distinct zones were identified in the joint cross-section, which experienced different microstructural evolution but all consisted of ferrite and pearlite. The highest microhardness was located in the WNZ. The fracture of joint located at HAZ during tensile test with ductile fracture mode.
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    • References (15)
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