高级检索

铝合金搅拌摩擦焊焊核紊流区及性能分析

罗传红, 郭立杰, 董丰波, 张建强, 彭卫平

罗传红, 郭立杰, 董丰波, 张建强, 彭卫平. 铝合金搅拌摩擦焊焊核紊流区及性能分析[J]. 焊接学报, 2016, 37(1): 90-94.
引用本文: 罗传红, 郭立杰, 董丰波, 张建强, 彭卫平. 铝合金搅拌摩擦焊焊核紊流区及性能分析[J]. 焊接学报, 2016, 37(1): 90-94.
shu
LUO Chuanhong, GUO Lijie, DONG Fengbo, ZHANG Jianqiang, PENG Weiping. Analysis of turbulent flowing zone in friction stir welded aluminum alloy weld nugget[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2016, 37(1): 90-94.
Citation: LUO Chuanhong, GUO Lijie, DONG Fengbo, ZHANG Jianqiang, PENG Weiping. Analysis of turbulent flowing zone in friction stir welded aluminum alloy weld nugget[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2016, 37(1): 90-94.
shu

铝合金搅拌摩擦焊焊核紊流区及性能分析

  • 1.

    武汉大学 动力与机械学院, 武汉 430072

  • 2.

    上海航天设备制造总厂, 上海 200245

基金项目: 上海航天创新基金资助项目(2015056)

Analysis of turbulent flowing zone in friction stir welded aluminum alloy weld nugget

  • 1.

    School of Power and Mechanical Engineering, Wuhan University, Wuhan 430072, China

  • 2.

    Shanghai Aerospace Equipments Manufacturer, Shanghai 200245, China

摘要

    摘要
  • 摘要: 采用搅拌摩擦焊方法对2219-T6铝合金进行焊接,对焊接接头的宏观形貌、微观组织、抗拉强度进行了分析,并通过对焊核塑性金属的流动状态进行分析,研究了搅拌摩擦焊接头强度弱化的原因. 结果表明,焊核根据流态可分为3个不同的区域,其中靠前进侧存在一个性能薄弱的B区域,该区的产生是抽吸挤压作用不平衡的结果,也是塑性金属向上回流通道. 该区具有较大的塑性损伤,易产生疏松缺陷及界面突变,晶粒具有较大的热不稳定性,是造成接头强度低于母材的主要原因之一. 通过高温短时的再结晶热处理工艺可以恢复该区域的强韧性,消除弱化问题.
    Abstract: A 2219-T6 aluminum alloy plate was welded by friction stir welding, and the morphology, microstructure and mechanical properties of the joint were investigated correspondingly. Through analyzing the flowing pattern of the plastically deformed metal in the nugget zone, the strength weakening of the joint were analyzed and summarized. The results show that the welded nugget is divided into three different regions according to the flowing pattern of plastic metal, and a turbulent flowing region is produced by unbalanced suction and extrusion of plastic metal at the front side of joint. This region with weak mechanical properties is a channel for the back flow of plastic metal. The weakening strength is due to the plastic deformation induced damage of the metal, which resulted in the formation of defects and the mutational interface. Moreover, grains in the turbulent flowing region presented large thermal instability. After the recrystallization heat treatment, the joint can restore the ductility, which will improve the mechanical properties of the joint.
    • HTML全文
    • 参考文献(8)
  • [1] Murr L E, Liu G,MeClure J C. Dynamic recrystallization in friction stir welding of aluminum alloy1100[J]. Journal of Materials Science Letters, 1997, 16(22): 1801-1806.
    [2] Rhodnev C G, Mahonev M V, Bingel W H, et al. Effect of friction stir welding on mierostrueture of 7075 aluminum[J]. Seripta Materialia, 1997, 37(1): 69-73.
    [3] 贺地求, 邓 航, 周鹏展. 2219厚板拌摩擦焊组织及性能分析[J]. 焊接学报, 2007, 28(9): 13-16. He Diqiu, Deng Hang, Zhou Pengzhan. Analysis of microstructure and properties in friction-stir welding of 2219 thick plate[J]. Transactions of the China Welding Institution, 2008, 28(9): 13-16.
    [4] 王春炎, 曲文卿, 姚君山, 等. 2219-T87铝合金搅拌摩擦焊接头组织与力学性能[J]. 焊接学报, 2010, 31 (10): 77-80. Wang Chunyan,Qu Wenqing,Yao Junshan,et al. Microstructures and mechanical properties of friction stir welded 2219-T87 aluminum alloy joints[J]. Transactions of the China Welding Institution, 2010, 31(10): 77-80.
    [5] 徐忠峰, 陆 皓, 余 春, 等. 2219铝合金双主轴回抽式搅拌摩擦焊接头组织与力学性能分析[J]. 焊接学报, 2013, 34(3): 73-76. Xu Zhongfeng, Lu Hao, Yu Chun, et al. Microstructure and mechanical properties of 2219 aluminum alloy refilling friction stir welded joints[J]. Transactions of the China Welding Institution, 2013, 34(3): 73-76.
    [6] 吴鸿燕, 刑 丽, 陈玉华, 等. 2219铝合金搅拌摩擦焊接头的断裂部位特征[J]. 金属热处理, 2011, 36(5): 90-93. Wu Hongyan, Xing Li, Chen Yuhua, et al. Fracture location characteristics of 2219 alum inum alloy friction stir welded joints[J].Heat Treatment of metals, 2011, 36(5): 90-93.
    [7] 柯黎明, 潘际銮, 邢 丽, 等. 搅拌摩擦焊焊缝金属塑性流动的抽吸-挤压理论[J]. 机械工程学报, 2009, 45(4): 89-94. Ke Liming, Pan Jiluan, Xing Li, et al. Sucking-extruding theory for the material flow in friction stir welds[J]. Journal of Mechanical Engineering, 2009, 45(4): 89-94.
    [8] 罗传红, 彭卫平, 张建强, 等. 焊后热处理对2219-T6铝合金搅拌摩擦焊接头力学性能的影响[J]. 材料热处理学报, 2015, 36(3): 35-39. Luo Chuanhong, Peng Weiping, Zhang Jianqiang, et al. Effect of post weld heat treatment on mechanical properties of friction stir welded joints for 2219-T6 aluminum alloy[J]. Transactions of Materials and Heat Treatment, 2015, 36(3): 35-39.
    • 相关文章
    • 施引文献(10)

  • 期刊类型引用(6)

    1. 高崇, 李书磊, 刘贞山, 赵经纬, 赵丕植. 焊接速度对5754铝合金FSW接头微观组织和力学性能的影响. 焊接学报. 2020(02): 80-86+101 . 本站查看
    2. 董丰波, 封小松, 罗传红, 黄传真, 刘大双. 搅拌摩擦焊焊后高温振荡热处理组织及机理分析. 电焊机. 2020(06): 26-29+132-133 . 百度学术
    3. 邓军. 材料性能对铝合金搅拌摩擦焊焊缝成形的影响. 内燃机与配件. 2019(14): 141-142 . 百度学术
    4. 余爱武, 齐海雁, 陈登海, 钱小明, 董星. 动支撑双面FSW焊技术在大口径铝合金螺旋管上的应用. 电焊机. 2019(09): 95-98 . 百度学术
    5. 余爱武, 陈登海, 齐海雁, 许春伟, 韩维光. 回抽式FSW技术在输变电导电杆产品上的应用. 电焊机. 2019(10): 41-43+49 . 百度学术
    6. 蔡云. 材料性能对铝合金搅拌摩擦焊焊缝成形的影响. 时代农机. 2018(05): 56-57 . 百度学术

    其他类型引用(4)

    • 资源附件(0)
计量
  • 文章访问数:  717
  • HTML全文浏览量:  2
  • PDF下载量:  796
  • 被引次数: 10
出版历程
  • 收稿日期:  2015-03-23

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