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热输入对6A02铝合金光纤激光焊缝成形的影响

许飞,陈俐,芦伟,郭路云

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文章导航 > 焊接学报  > 2017 >  38(8): 119-123
许飞,陈俐,芦伟,郭路云. 热输入对6A02铝合金光纤激光焊缝成形的影响[J]. 焊接学报, 2017, 38(8): 119-123. doi: 10.12073/j.hjxb.20150830004
引用本文: 许飞,陈俐,芦伟,郭路云. 热输入对6A02铝合金光纤激光焊缝成形的影响[J]. 焊接学报, 2017, 38(8): 119-123. doi: 10.12073/j.hjxb.20150830004
shu
XU Fei, CHEN Li, LU Wei, GUO Luyun. Effect of heat input on weld appearance for fiber laser welding 6A02 aluminum alloy[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2017, 38(8): 119-123. doi: 10.12073/j.hjxb.20150830004
Citation: XU Fei, CHEN Li, LU Wei, GUO Luyun. Effect of heat input on weld appearance for fiber laser welding 6A02 aluminum alloy[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2017, 38(8): 119-123. doi: 10.12073/j.hjxb.20150830004
shu

热输入对6A02铝合金光纤激光焊缝成形的影响

doi: 10.12073/j.hjxb.20150830004

Effect of heat input on weld appearance for fiber laser welding 6A02 aluminum alloy

  • 摘要: 采用大功率密度的光纤激光对1.0 mm厚的6A02铝合金进行了激光焊接，着重研究了焊接热输入对焊缝宏观形貌、组织和性能的影响. 结果表明，采用高速焊接且热输入控制在8～22 J/mm范围内可以获得稳定全熔透焊缝. 典型的光纤激光焊缝横截面常呈近X形，此种形貌的焊接温度场不均匀性较小，有利于减少焊接失稳和变形. 从熔合线至焊缝中心，显微组织逐渐从柱状晶组织向混合组织(柱状晶+等轴晶)转变. 随焊接热输入的降低，焊缝区的显微组织相对细化，接头熔合线附近的软化现象逐渐减弱，焊缝区显微硬度和接头抗拉强度均略有增加.
    Abstract: The fiber laser beam with high power density is used for welding 6A02 aluminum alloy with 1.0mm thickness. And the effects of heat input on weld macrography, structure and properties are studied. The results show that the stable fully penetration weld could be obtained when the heat input is controlled in the range of 8-12 J/mm and the welding speed is very high. The typical crosssection of the welds always presents near X shape. The characteristic of the welds could reduce the nonuniformity of welding temperature field. It also could reduce welding buckling and deformation. The columnar microstructure is formed near the fusion line. The mixed microstructures, including columnar grains and equiaxed grains, distribute in the center of the weld. The transition from columnar microstructure to mixed microstructures can be found from the fusion line to the weld center. With the heat input reduced, the microstructures of the weld zone are tendency to fine, the soften phenomenon near the fusion line is helpful to weak, the microhardness of the weld zone and the tensile strength of the joints are increasing slightly.
  • [1] 左铁钏, 肖荣诗, 陈 铠, 等. 高强铝合金的激光加工[M]. 北京： 国防工业出版社, 2002.[2] 陈 俐, 巩水利. 铝合金激光焊接技术的应用与发展[J]. 航空制造技术, 2011(11): 46-49. Chen Li, Gong Shuili. Application and development of laser welding technology for aluminum alloy[J]. Aeronautical Manufacturing Technology, 2011(11): 46-49.[3] Quintino L, Costa A, Miranda R,etal. Welding with high power fiber lasers-a preliminary study[J]. Materials and Design, 2007, 28(4): 1231-1237.[4] 陈 俐. 航空钛合金激光全熔透稳定性及焊接物理冶金研究[D]. 武汉: 华中科技大学, 2005.[5] 姚 伟, 巩水利, 陈 俐. 钛合金激光穿透焊的焊缝成形(Ⅱ)[J]. 焊接学报, 2004, 25(5): 74-76. Yao Wei, Gong Shuili, Chen Li. Weld shaping for laser fully penetration welding titanium alloy(Ⅱ)[J]. Transactions of the China Welding Institution, 2004, 25(5): 74-76.[6] 许 飞, 巩水利, 陈 俐, 等. 钛合金光纤激光焊接接头特征分析[J]. 航空制造技术, 2013, 436(16): 90-92. Xu Fei, Gong Shuili, Chen Li,etal. Characteristics of titanium alloy by fibre laser welding[J]. Welding Technology in Aerospace Industry, 2013, 436(16): 90-92.[7] 许 飞, 杨 璟, 巩水利, 等. 热输入对铝合金光纤激光穿透焊缝成形的影响[J]. 中国激光, 2014, 41(12): 1203001. Xu Fei, Yang Jing, Gong Shuili,etal. Effect of heat input on weld appearance for fiber laser beam full penetration welding aluminum alloy[J]. Chinese Journal of Lasers, 2014, 41(12): 1203001.[8] 中国航空材料手册编辑委员会. 中国航空材料手册第3卷, 铝合金 镁合金[M]. 第2版. 北京: 中国标准出版社, 2002,[9] 温 鹏, 张旭东, 陈武柱, 等. 薄板激光焊时失稳变形及其控制[J]. 焊接学报, 2006, 27(9): 99-102. Wen Peng, Zhang Xudong, Chen Wuzhu,etal. Buckling distortion of laser welded thin plates and its control by dynamic cooling[J]. Transactions of the China Welding Institution, 2006, 27(9): 99-102.[10] 闫俊霞, 霍立兴, 张玉凤, 等. 焊接薄板失稳变形预测方法[J]. 焊接学报, 2005, 26(6): 50-53. Yan Junxia, Huo Lixing, Zhang Yufeng,etal. Prediction method of buckling distortion of welding thin plate[J]. Transactions of the China Welding Institution, 2005, 26(6): 50-53.[11] Chon L T, Han M S. Thermal and mechanical evolution of welding induced buckling distortion[J]. Journal of the Chinese Institute of Engineers, 2004, 27(6): 905-918.[12] Michaleris P, Debiccari A. Prediction of welding distortion[J]. Welding Journal, 1997, 76(4): 172-181.[13] 陈伯蠡. 焊接冶金原理[M]. 北京: 清华大学出版社, 1991.[14] 周振丰. 焊接冶金学(金属焊接性)[M]. 北京: 机械工业出版社, 1995.
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出版历程
  • 收稿日期:  2015-08-30

热输入对6A02铝合金光纤激光焊缝成形的影响

doi: 10.12073/j.hjxb.20150830004
  • 收稿日期: 2015-08-30

摘要: 采用大功率密度的光纤激光对1.0 mm厚的6A02铝合金进行了激光焊接，着重研究了焊接热输入对焊缝宏观形貌、组织和性能的影响. 结果表明，采用高速焊接且热输入控制在8～22 J/mm范围内可以获得稳定全熔透焊缝. 典型的光纤激光焊缝横截面常呈近X形，此种形貌的焊接温度场不均匀性较小，有利于减少焊接失稳和变形. 从熔合线至焊缝中心，显微组织逐渐从柱状晶组织向混合组织(柱状晶+等轴晶)转变. 随焊接热输入的降低，焊缝区的显微组织相对细化，接头熔合线附近的软化现象逐渐减弱，焊缝区显微硬度和接头抗拉强度均略有增加.

English Abstract

许飞,陈俐,芦伟,郭路云. 热输入对6A02铝合金光纤激光焊缝成形的影响[J]. 焊接学报, 2017, 38(8): 119-123. doi: 10.12073/j.hjxb.20150830004
引用本文: 许飞,陈俐,芦伟,郭路云. 热输入对6A02铝合金光纤激光焊缝成形的影响[J]. 焊接学报, 2017, 38(8): 119-123. doi: 10.12073/j.hjxb.20150830004
shu
XU Fei, CHEN Li, LU Wei, GUO Luyun. Effect of heat input on weld appearance for fiber laser welding 6A02 aluminum alloy[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2017, 38(8): 119-123. doi: 10.12073/j.hjxb.20150830004
Citation: XU Fei, CHEN Li, LU Wei, GUO Luyun. Effect of heat input on weld appearance for fiber laser welding 6A02 aluminum alloy[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2017, 38(8): 119-123. doi: 10.12073/j.hjxb.20150830004
shu

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