超声冲击对Al-Cu合金TIG焊缝微观组织演变的影响
Effect of ultrasonic impact on Al-Cu alloy TIG weld microstructure evolution
-
摘要: 随焊超声冲击焊接通过控制超声冲击工具头的上下运动，实现对焊缝的随焊冲击处理，同时向熔池中导入周期性超声能量.熔池内金属流动状态周期性变化，使得焊缝表面形成明显的类似鱼鳞纹状结构.对比随焊超声冲击焊接和普通TIG焊Al-Cu合金熔池结晶情况.结果表明，周期性超声能量的导入使熔池结晶呈现周期性.有超声作用时，焊缝晶粒细化、细长共晶组织被打碎，焊缝中细晶区宽度与焊接速度、单个周期内超声作用时间线性相关.当超声开始导入时，形成带状组织结构，组织内部θ相细小且分布均匀；超声撤离时，共晶组织呈线状析出，有聚集趋势.Abstract: Trailing ultrasonic impact welding (TUIW), impacted the welds by controlling the impact-tool up and down, with periodic ultrasonic energy conducted to the molten pool at the same time. Metal flowing patterns changed periodically under the influence of periodic ultrasonic energy, obvious scales formed in the welds surface similar to the fish-scale. Compared with conventional TIG, it turns out that TUIW periodic ultrasonic energy leads to periodic crystallization during Al-Cu alloy molten pool solidification process. With ultrasonic in, the weld grains were refined and the elongated eutectics were broken down, the width of small grain zone depend linearly on welding velocity and the ultrasonic action time in a single cycle. When ultrasonic began to import, banded structure formed in the weld, θ phase was small and distributed evenly within the organization. Meanwhile, eutectic organization precipitated linearly and tended to be gathered.
-
Keywords:
- ultrasonic /
- impact /
- periodic /
- crystallization
-
-
[1] Callister W D. Materials science and engineering:an introduction[M]. New York:Wiley, 2007. [2] Jian X, Xu H, Meek T T, et al.Effect of power ultrasound on solidification of aluminum A356 alloy[J]. Materials Letters, 2005, 59(2):190-193. [3] Eskin G I, Makarov G S, Pimenov Y P. Effect of ultrasonic processing of molten metal on structure formation and improvement of properties of high-strength Al-Zn-Mg-Cu-Zr alloys[J]. Advanced Performance Materials, 1995, 2(1):43-50. [4] Zhang S, Zhao Y, Cheng X, et al. High-energy ultrasonic field effects on the microstructure and mechanical behaviors of A356 alloy[J]. Journal of Alloys and Compounds, 2009, 470(1):168-172. [5] 张勤练, 林三宝, 范成磊, 等. 不锈钢超声-脉冲TIG焊缝的组织与性能[J]. 焊接学报, 2012, 33(12):61-64. Zhang Qinlian, Lin Sanbao, Fan Chenglei, et al. Microstructure and mechanical behaviors of stainless steel weld metal by ultrasonic assisted pulse TIG welding technology[J]. Transactions of the China Welding Institution, 2012, 33(12):61-64. [6] 范成磊, 方洪渊, 田应涛, 等. 随焊冲击碾压对LY12CZ铝合金接头组织和性能的影响[J]. 材料工程, 2004, 10(5):24-28. Fan Chenglei, Fang Hongyuan, Tian Yingtao, et al. Influence on metallographic structure and mechanical properties of LY12CZ welded jointed with weld with trailing impactive rolling[J]. Journal of Materials Engineering, 2004, 10(5):24-28. [7] 饶德林, 陈立功, 倪纯珍, 等. 超声冲击对焊接结构残余应力的影响[J]. 焊接学报, 2005, 26(4):48-50. Rao Delin, Chen Ligong, Ni Chunzhen, et al.Effect of ultrasonic impact treatment on residual stress of welded structure[J]. Transactions of the China Welding Institution, 2005, 26(4):48-50. [8] 吴敏生, 何龙标, 李路明, 等. 电弧超声焊接技术[J]. 焊接学报, 2005, 26(6):40-44. Wu Minsheng, He Longbiao, Li Luming, et al. Study on the welding technology of arc-ultrasonic[J]. Transactions of the China Welding Institution, 2005, 26(6):40-44. -
期刊类型引用(10)
1. 徐文彦，吴彪，王洪福，汪春民，李刚，王城坡. 药芯焊丝组分及合金化调控研究现状及进展. 焊接技术. 2024(11): 8-16 . 
百度学术
2. 龚建勋，刘超，黄洪江，艾孝文，刘书同. CaCO_3对复合粉粒和实心焊丝明弧堆焊高铬合金组织及耐磨性的影响. 表面技术. 2023(02): 215-224 . 百度学术
3. 王华，卓君，唐洪奎，张智昶. 激光熔覆马氏体不锈钢组织与性能分析. 中国新技术新产品. 2021(12): 11-14 . 百度学术
4. 李响，来佑彬，杨波，王冬阳，孙铭含，吴海龙，苑仁月，孙世杰，于锦. 等离子熔覆Fe-Cr-C合金涂层工艺优化及性能研究. 表面技术. 2020(06): 177-184 . 百度学术
5. 黄梦真，王守忠，王玉美. 焊后冷却方式对Fe-Cr-C-B堆焊合金强韧性的影响. 材料保护. 2020(08): 96-100+144 . 百度学术
6. 王守忠，朱凯，刘玉莹. 堆焊工艺对曲轴轴颈堆焊合金组织性能的影响. 商丘职业技术学院学报. 2020(05): 73-78 . 百度学术
7. 王海林，雷达，顾珍珍，彭道衡，王金凤. 低碳钢电弧堆焊工艺对焊缝力学性能的影响. 材料保护. 2020(12): 84-87+115 . 百度学术
8. 章友谊，杜东方，周博芳. DJ5003焊条堆焊金属的显微组织及耐磨性能研究. 焊接技术. 2019(03): 30-33 . 百度学术
9. 江山，姚宗湘，郑靖上，高敏智，田佳俊，谢清清，张中文，左存果. Q345钢表面堆焊金属的组织与性能研究. 电焊机. 2019(11): 35-39 . 百度学术
10. 刘政军，刘玲玲，张天珺，芦昊天，苏允海. N和Nb对Fe-Cr-C堆焊层组织和性能的影响. 沈阳工业大学学报. 2018(04): 385-390 . 百度学术
其他类型引用(4)
计量
- 文章访问数: 257
- HTML全文浏览量: 16
- PDF下载量: 143
- 被引次数: 14
下载:
