Ethanol liquid film-assisted nanosecond laser transmission welding for stainless steel and glass
文献类型： 外文期刊
作者： Zhao, Runhan 1 ; Li, Yide 2 ; Luo, Jingyi 1 ; Liu, Zhijiao 1 ; Fu, Jiajun 1 ; Liu, Chao 1 ; Wang, Huixin 3 ; Wang, Qinghua 1 ; Zhang, Tairui 1 ;
作者机构： 1.Southeast Univ, Sch Mech Engn, Nanjing 211189, Peoples R China
2.Shandong Special Equipment Inspect Inst Grp Co Ltd, Jinan 250101, Peoples R China
3.Jiangsu Acad Agr Sci, Inst Agr Facil & Equipment, Nanjing 210014, Peoples R China
4.Minist Agr & Rural Affairs, Key Lab Protected Agr Engn Middle & Lower Reaches, Nanjing 210014, Peoples R China
关键词： Nanosecond laser; Laser welding; Dissimilar materials; Mechanical strength
期刊名称：JOURNAL OF MANUFACTURING PROCESSES （ 影响因子：6.8； 五年影响因子：7.0 ）
ISSN： 1526-6125
年卷期： 2025 年 149 卷
页码：
收录情况： SCI
摘要： This study introduces a novel nanosecond laser welding technique for efficiently joining silica glass to 304 stainless steel. A low-cost, fixture-free optical contact condition is realized through the anhydrous ethanol liquid film-assisted transmission welding (LFTW) method, utilizing surface tension and liquid pressure as alternatives to conventional external pressure. Two welding element configurations (straight lines and concentric circles) were systematically analyzed, and the effects of three scanning path strategies on weld strength were evaluated. The experimental results show that the scanning strategy involving an outer frame followed by interior filling significantly enhances joint shear strength, reaching a maximum value of 19.73 MPa. Furthermore, by applying this scanning path and comparing different operating conditions with and without an intermediate ethanol layer and with or without external pressure, it was found that the condition using an ethanol interlayer but no external mechanical pressure produced nearly equivalent joint strength to externally pressurized conditions, without requiring fixturing. This study also presents detailed observations of the welded interface microstructure and proposes bonding and fracture models to explain the fundamental mechanisms responsible for joint formation during nanosecond laser welding of dissimilar materials.
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