高级检索

2A14-T6铝合金双轴肩搅拌摩擦焊特征及接头组织性能分析

张会杰, 王敏, 张骁, 张景宝

张会杰, 王敏, 张骁, 张景宝. 2A14-T6铝合金双轴肩搅拌摩擦焊特征及接头组织性能分析[J]. 焊接学报, 2015, 36(12): 65-68,104.
引用本文: 张会杰, 王敏, 张骁, 张景宝. 2A14-T6铝合金双轴肩搅拌摩擦焊特征及接头组织性能分析[J]. 焊接学报, 2015, 36(12): 65-68,104.
shu
ZHANG Huijie, WANG Min, ZHANG Xiao, ZHANG Jingbao. Characteristics and joint microstructure-property analysis of bobbin tool friction stir welding of 2A14-T6 aluminum alloy[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2015, 36(12): 65-68,104.
Citation: ZHANG Huijie, WANG Min, ZHANG Xiao, ZHANG Jingbao. Characteristics and joint microstructure-property analysis of bobbin tool friction stir welding of 2A14-T6 aluminum alloy[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2015, 36(12): 65-68,104.
shu

2A14-T6铝合金双轴肩搅拌摩擦焊特征及接头组织性能分析

  • 中国科学院沈阳自动化研究所 机器人学国家重点实验室, 沈阳 110016

基金项目: 国家科技重大专项"大型薄壁高精度搅拌摩擦焊设备技术研究"资助项目(2010ZX04007-011)

Characteristics and joint microstructure-property analysis of bobbin tool friction stir welding of 2A14-T6 aluminum alloy

  • State Key Laboratory of Robotics, Shenyang Institute of Automation Chinese Academy of Sciences, Shenyang 110016, China

摘要

    摘要
  • 摘要: 成功实现了2A14-T6高强铝合金的双轴肩搅拌摩擦焊,获得了表面成形良好,无内部缺陷的优质接头. 试验发现,在焊缝的焊核内存在一个由上、下轴肩和搅拌针所驱动的材料塑性流动交汇区,该交汇区靠近焊缝下表面. 微观分析表明,焊核上部的晶粒尺寸要小于其中部和下部的晶粒尺寸. 焊缝各区的块状第二相在焊接中发生了溶解和粗化,导致接头内出现了宽度近乎轴肩直径二倍的软化区;焊缝各层硬度分布接近,没有出现常规搅拌摩擦焊中常见的接头各层异性现象. 经拉伸测试证实,双轴肩焊接接头的强度系数达到了71%,拉伸时断在了焊核内的材料流动交汇区处.
    Abstract: A 2A14-T6 aluminum alloy was successfully bobbin tool friction stir welded. The defect-free sound joint with good surface and inner formation was produced. It was found that a converging zone of material plastic flow, composed of upper- and lower-shoulder-driven flows as well as pin-driven flow, was formed at the lower part of weld nugget zone. Microstructural analysis indicated that the grain size of the upper part was smaller than that of the middle and lower parts in the weld nugget zone. A softening region, whose width was approximately twice that of the shoulder diameter, was formed in the joint due to the coarsening and dissolution of the block-shaped second phases. The hardness distributions of the three layers of the joint were nearly the same, indicating that the heterogeneity of joint properties commonly occurred in conventional friction stir welding was not present in bobbin tool friction stir welding. The tensile test results showed that the strength efficiency of the bobbin tool friction stir welded joint can reach 71%. The joint was fractured through the converging zone of material flow in the weld nugget zone.
    • HTML全文
    • 参考文献(8)
  • [1] Marie F, Guerin B, Deloison D, et al. Investigation on bobbin tool friction stir welding of 2000 series aluminum thin sheets[C]// 7th International Symposium on Friction Stir Welding, Awaji Island, Japan, 2008: 20-22.
    [2] Marie F, Alléhaux D, Esmiller B, et al. Development of the bobbin tool technique on various aluminum alloys[C]// 5th International Symposium on Friction Stir Welding, Metz, France, 2004: 14-16.
    [3] 张 健, 李 光, 李从卿, 等. 2219-T4铝合金双轴肩FSW与常规FSW接头性能对比研究[J]. 焊接, 2008(11): 50-52. Zhang Jian, Li Guang, Li Congqing, et al. Comparison of joint properties of AA2219-T4 between conventional FSW and bobbin-tool FSW[J]. Welding & Joining, 2008(11): 50-52.
    [4] 赵衍华, 李延民, 郝云飞, 等. 2219铝合金双轴肩搅拌摩擦焊接头组织与性能分析[J]. 宇航材料工艺, 2012(6): 70-75. Zhao Yanhua, Li Yanmin, Hao Yunfei, et al. Microstructure and mechanical properties of self-reacting friction stir welding of 2219 aluminium alloy[J]. Aerospace Materials & Technology, 2012(6): 70-75.
    [5] 邢 丽, 柯黎明, 刘鸽平, 等. 铝合金LD10的搅拌摩擦焊组织及性能分析[J]. 焊接学报, 2002, 23(6): 55-58. Xing Li, Ke Liming, Liu Geping, et al. Microstructure and mechanical properties of a friction stir welded LD10 aluminum[J]. Transactions of the China Welding Institution, 2002, 23(6): 55-58.
    [6] Lin S B, Zhao Y H, Wu L. Integral and layered mechanical properties of friction stir welded joints of 2014 aluminum alloy[J]. Materials Science and Technology, 2006, 22(8): 995-998.
    [7] 周鹏展, 李东辉, 贺地求, 等. 2219-T87厚板搅拌摩擦焊沿厚度方向的性能差异[J]. 焊接学报, 2007, 28(10): 5-8. Zhou Pengzhan, Li Donghui, He Diqiu, et al. Through-thickness diversity of properties in friction stir welded 2219-T87 thick aluminum alloy plate[J]. Transactions of the China Welding Institution, 2007, 28(10): 5-8.
    [8] 董继红, 聂绪胜, 鄢江武, 等. 常规FSW与双轴肩FSW对铝合金接头组织和性能的影响[J]. 焊接学报, 2013, 34(7): 85-88. Dong Jihong, Nie Xusheng, Yan Jiangwu, et al. Effect of welding ways on microstructure and mechanical properties of 6082 aluminum alloy[J]. Transactions of the China Welding Institution, 2013, 34(7): 85-88.
    • 相关文章
    • 施引文献
    • 资源附件(0)
计量
  • 文章访问数:  628
  • HTML全文浏览量:  30
  • PDF下载量:  305
  • 被引次数: 0
出版历程
  • 收稿日期:  2014-03-17

目录

摘要
HTML全文
    参考文献(8)
    相关文章
    施引文献
    资源附件(0)

    /

    返回文章
    返回

    网站版权 © 焊接杂志社焊接学报编辑部电话：0451-86323218地址：哈尔滨市松北区创新路2077号

    本系统由 北京仁和汇智信息技术有限公司 开发  百度统计