高级检索

2219铝合金不同气氛下TIG焊焊接接头组织性能

周政1,王国庆2,宋建岭3,赵红星1,杨春利1

周政1,王国庆2,宋建岭3,赵红星1,杨春利1. 2219铝合金不同气氛下TIG焊焊接接头组织性能[J]. 焊接学报, 2018, 39(7): 47-50. DOI: 10.12073/j.hjxb.2018390173
引用本文: 周政1,王国庆2,宋建岭3,赵红星1,杨春利1. 2219铝合金不同气氛下TIG焊焊接接头组织性能[J]. 焊接学报, 2018, 39(7): 47-50. DOI: 10.12073/j.hjxb.2018390173
ZHOU Zheng1, WANG Guoqing2, SONG Jianlin3, ZHAO Hongxing1, YANG Chunli1. Microstructure and mechanical properties of 2219 aluminum alloys TIG welding welded joints in different shielding gases[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2018, 39(7): 47-50. DOI: 10.12073/j.hjxb.2018390173
Citation: ZHOU Zheng1, WANG Guoqing2, SONG Jianlin3, ZHAO Hongxing1, YANG Chunli1. Microstructure and mechanical properties of 2219 aluminum alloys TIG welding welded joints in different shielding gases[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2018, 39(7): 47-50. DOI: 10.12073/j.hjxb.2018390173

2219铝合金不同气氛下TIG焊焊接接头组织性能

基金项目: 国家自然科学基金资助项目(51475105)

Microstructure and mechanical properties of 2219 aluminum alloys TIG welding welded joints in different shielding gases

  • 摘要: 为研究氦弧TIG焊焊缝质量,对比分析了2219铝合金氦弧TIG焊与氩弧TIG焊焊缝成形及组织性能.结果表明,在背部熔宽相同的条件下,氦弧TIG焊焊缝正面熔宽、下塌量及热影响区宽度均小于氩弧TIG焊,氦弧TIG焊与氩弧TIG焊焊缝的微观组织及第二相组织基本相似,焊缝区晶粒为等轴晶,热影响区晶粒为粗大的板条状,组织为粗大的α铝基体与金属间化合物Al2Cu及少量的共晶组织,焊缝区的第二相组织明显多于热影响区,无法发挥弥散强化的作用.氦弧TIG焊与氩弧TIG焊焊接接头的断裂方式均为韧性断裂,抗拉强度基本保持一致,氦弧TIG焊焊接接头的断裂总延伸率高于氩弧TIG焊,维氏硬度高于氩弧TIG焊焊缝的硬度.
    Abstract: The microstructure and mechanical properties of 2219 aluminum alloys welded joints of helium shielded TIG welding and argon shielded TIG welding were investigated. The results show that, the width of the weld bead, the concavity and the width of heat affected zone in helium shielded TIG welding are smaller than those in argon shielded TIG welding. The microstructure and second-phase of them are similar. The grains in weld area are isometric. In heat affected zone, grain are coarse stripes, and there are the α aluminum substrate, the inter-metallic compound Al2Cu and some eutectic structure. The amount of the second-phase particles in weld zone is larger than that in heat affected zone. The tensile strength of the welded joints are similar, and the fracture modes are both ductile fracture. The elongation and hardness of the welded joint of helium shielded TIG welding are larger.
  • [1] 张勤练. 柔性变极性等离子弧特性及铝合金横焊穿孔熔池行为[D]. 哈尔滨:哈尔滨工业大学, 2015.
    [2] 刘志华, 赵兵, 赵青. 21世纪航天工业铝合金焊接工艺技术展望[J]. 导弹与航天运载技术, 2002(5):63-68. Liu Zhihua, Zhao Bing, Zhao Oing. Prospects for welding technology of aluminum alloy in aerospace industry in 21st century[J]. Missiles and Space Vehicles, 2002(5):63-68.
    [3] 王元良, 屈金山. 铝合金焊接性能及焊接接头性能[J]. 中国有色金属学报, 1997, 7(1):69-74. Wang Yuanliang, Qu Jinshan. Weldability of aluminium alloys and properties of weld joints[J]. The Chinese Journal of Nonferrous Metals, 1997, 7(1):69-74.[DOI: 10.3321/j.issn:1004-0609.1997.01.017]
    [4] Sire S, Rucketr G, Marya S. Flux optimization for enhanced weld penetration in aluminum contribution to FBTIG process[J]. Welding in the World, 2002, 46:207-217.
    [5] Yuan Heran, Lin Sanbao, Yang Chunli, et al. Microstructure and porosity analysis in ultrasonic assisted TIG welding of 2014 aluminum alloy[J]. China Welding, 2011, 20(1):39-43
    [6] 林三宝, 范成磊, 杨春利. 高效焊接方法[M]. 北京:机械工业出版社, 2012.
    [7] 朱正行, 杨君仁, 倪纯珍. 钨极氦气保护电弧焊电弧行为的研究[J]. 焊接学报, 1984, 5(01):37-42. Zhu Zhengxing, Yong Junren, Ni Chunzhen. Studies of welding arc behavior in the helium atmosphere[J]. Transactions of the China Welidng Institution, 1984, 5(01):37-42.
  • 期刊类型引用(4)

    1. 林添祥,冯美艳,练国富,陈昌荣,兰如清. 合金元素对激光熔覆高熵合金涂层硬度影响的研究进展. 精密成形工程. 2024(05): 201-224 . 百度学术
    2. 张昆,李美求,魏轲,冯鹏云. 抗冲蚀磨损涂层制备技术及机理的研究进展. 焊接. 2022(04): 9-16 . 百度学术
    3. 张志彬,张舒研,陈永雄,高洋洋,梁秀兵. 合金组元与含量对激光熔覆高熵合金涂层的影响研究综述. 中国表面工程. 2021(05): 76-91 . 百度学术
    4. 鲁一荻,张骁勇,彭志刚. 合金元素对激光熔覆高熵合金涂层影响的研究进展. 焊接. 2021(10): 8-14+24+61 . 百度学术

    其他类型引用(5)

计量
  • 文章访问数:  598
  • HTML全文浏览量:  7
  • PDF下载量:  77
  • 被引次数: 9
出版历程
  • 收稿日期:  2017-09-10

目录

    /

    返回文章
    返回