中国激光, 2015, 42 (4): 0403003, 网络出版: 2015-03-25   

建筑用玻璃与钛合金TC4的激光封接工艺及性能研究

Study on Process and Performance of Architectural Glass-to-Titanium Alloy TC4 with Laser Welding
作者单位
1 苏州大学机电工程学院激光加工中心, 江苏 苏州 215021
2 苏州大学沙钢钢铁学院, 江苏 苏州 215021
摘要
钛合金因具有强度高、质量轻、耐腐蚀性强等优良性能,其与玻璃的连接被广泛应用于新型建筑物屋顶、幕墙、窗户等。以建筑用玻璃和钛合金TC4为实验材料,利用300 W Nd:YAG 毫秒级脉冲激光器采用透射焊接方式对两者进行连接。利用万能拉伸试验机测量焊接件拉断力,用扫描电子显微镜观察玻璃断口及焊缝截面形貌。研究了工艺参数(功率、脉宽、频率、离焦量)对焊缝成形、焊接件拉断力及玻璃断口形貌的影响,讨论了激光作用下玻璃与钛合金的连接机理。研究表明,毫秒级脉冲激光可实现玻璃与TC4的可靠封接,封接件拉断力最大可达140.76 N。界面处形成的玻璃钛合金镶嵌结构对两者的连接起主要作用,激光辐照区周边形成的粘附物对连接起辅助作用。
Abstract
The bonding of glass and titanium alloy is widely applied in roof, curtain wall, windows due to its excellent performance such as high strength, light weight and corrosion resistance. An experimental study of welding of dissimilar materials between transparent architectural glass and titanium alloy (TC4) using a pulsed mode 300 W Nd:YAG laser is reported. The process is achieved when the joint is irradiated from the glass side. The test of breaking strength is conducted by universal tensile test machine. The fracture morphology on glass side and microstructure of weldment are analyzed using scanning electron microscopy. The influence of process parameters (power, pulse duration, pulse repetition rate, defocus distance) on weld seam formability, breaking strength and fracture morphology are studied. The results indicate that a good glass-to-TC4 joint can be obtained using millisecond pulsed laser. The maximum breaking strength of the weldment is 140.76 N. The mixed structure of glass and TC4 at the interface plays an important role in connecting the two materials, and adhesion particles play a subsidiary role.
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刘星, 陈长军, 王晓南, 张敏, 陈凯, 杨兆华. 建筑用玻璃与钛合金TC4的激光封接工艺及性能研究[J]. 中国激光, 2015, 42(4): 0403003. Liu Xing, Chen Changjun, Wang Xiaonan, Zhang Min, Chen Kai, Yang Zhaohua. Study on Process and Performance of Architectural Glass-to-Titanium Alloy TC4 with Laser Welding[J]. Chinese Journal of Lasers, 2015, 42(4): 0403003.

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