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搅拌头旋转频率对静止轴肩搅拌摩擦焊接头力学性能的影响规律

姬书得, 孟祥晨, 黄永宪, 高双胜, 路浩, 马琳

姬书得, 孟祥晨, 黄永宪, 高双胜, 路浩, 马琳. 搅拌头旋转频率对静止轴肩搅拌摩擦焊接头力学性能的影响规律[J]. 焊接学报, 2015, 36(1): 51-54.
引用本文: 姬书得, 孟祥晨, 黄永宪, 高双胜, 路浩, 马琳. 搅拌头旋转频率对静止轴肩搅拌摩擦焊接头力学性能的影响规律[J]. 焊接学报, 2015, 36(1): 51-54.
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JI Shude, MENG Xiangchen, HUANG Yongxian, GAO Shuangsheng, LU Hao, MA Lin. Effect of rotational velocity of tool on mechanical properties of stationary shoulder friction stir welding[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2015, 36(1): 51-54.
Citation: JI Shude, MENG Xiangchen, HUANG Yongxian, GAO Shuangsheng, LU Hao, MA Lin. Effect of rotational velocity of tool on mechanical properties of stationary shoulder friction stir welding[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2015, 36(1): 51-54.
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搅拌头旋转频率对静止轴肩搅拌摩擦焊接头力学性能的影响规律

  • 1.

    沈阳航空航天大学航空航天工程学部, 沈阳 110136;哈尔滨工业大学先进焊接与连接国家重点实验室, 哈尔滨 150001

  • 2.

    沈阳航空航天大学航空航天工程学部, 沈阳 110136

  • 3.

    哈尔滨工业大学先进焊接与连接国家重点实验室, 哈尔滨 150001

  • 4.

    南车青岛四方机车车辆股份有限公司, 青岛 266111

基金项目: 国家自然科学基金资助项目(51204111);航空科学基金资助项目(2013ZE54021,2014ZE54021);先进焊接与连接国家重点实验室基金资助项目(AWJ-M13-07)

Effect of rotational velocity of tool on mechanical properties of stationary shoulder friction stir welding

  • 1.

    Faculty of Aerospace Engineering, Shenyang Aerospace University, Shenyang 110136, China;State Key Laboratory of Advanced Welding and Joining, Harbin Institute of Technology, Harbin 150001, China

  • 2.

    Faculty of Aerospace Engineering, Shenyang Aerospace University, Shenyang 110136, China

  • 3.

    State Key Laboratory of Advanced Welding and Joining, Harbin Institute of Technology, Harbin 150001, China

  • 4.

    CSR Qingdao Sifang Locomotive and Rolling Stock Company, Limited, Qingdao 266111, China

摘要

    摘要
  • 摘要: 利用自行设计的静止轴肩装置对6005A-T6铝合金进行了静止轴肩搅拌摩擦焊的试验研究.结果表明,当焊接速度为200 mm/min时,表面光滑且无缺陷的焊接接头抗拉强度与断后伸长率随着搅拌头旋转频率的增加呈现先增加后减小的趋势;焊接接头的正背弯180°无裂纹;当旋转频率为1800 r/min时,抗拉强度达到最大值234 MPa,接头强度系数达到79%.静止轴肩搅拌摩擦焊接头的显微维氏硬度呈W形分布,最小值出现在前进侧的热影响区;接头的软化程度随搅拌头旋转频率的增加而增加.焊接接头的断裂位置位于热力影响区,断口呈韧性断裂.
    Abstract: Stationary shoulder friction stir welding (SSFSW) of 6005A-T6 aluminum alloy was investigated on basis of a self-designed stationary shoulder equipment. The results show that tensile strength and elongation of defect-free SSFSW joint with gloss surface both increase and then decrease with increasing rotational velocity of tool, and no cracks appear at the bending degree of 180°. At a constant welding speed of 200 mm/min and the rotational velocity of 1800 r/min, the tensile strength of joint reaches the maximum value of 234 MPa and the strength factor is 79%. The distribution of hardness of SSFSW joint presents W-shape and the minimum hardness appears in heat affected zone. The softening degree of joint increases with the increase of rotational velocity of tool. Fracture position of SSFSW occurs in thermo-mechanically affected zone and the fracture surface presents the typical ductile fracture.
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    • 参考文献(13)
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    [2] 姬书得,孟庆国,史清宇,等.搅拌针形状影响搅拌摩擦焊过程金属塑性流动规律的数值模拟[J].焊接学报, 2013, 34(2):93-96. Ji Shude, Meng Qingguo, Shi Qingyu, et al. Numerical simulation of metal plastic flow in friction stir welding affected by pin shape[J]. Transactions of the China Welding Institution, 2013, 34(2):93-96.
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  • 收稿日期:  2014-03-16

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