Abstract
As the product size decreases day by day, microjoining has become an important field in miniature manufacturing components. Various fabrication techniques have been utilized for joining of materials at the microscale level. Laser welding is one of the most suited techniques for joining of thin sheets due to its characteristics of focused beam, less distortion, smaller heat-affected zone, and high precision. Titanium and its alloys have found a niche in various industries due to their extensive properties. However, comprehensive investigation on laser microwelding of titanium alloy of thickness less than 1 mm is limited. This work aims for better understanding of the influence of the pulse Nd:YAG laser welding parameters on the properties of thin Ti6Al4V weld. The effect of peak power on joint characteristics is presented. High-quality weld with good strength and toughness is produced with the present set of experiments. Fractographs revealed the mixed type of fracture mode of the welded joint. A sequentially coupled thermomechanical model for full plate welding is developed to analyze the differential influence of process parameters. Large displacement theory is adopted for distortion analysis to comply with the experimental data. It was found that laser welding with less distortion and small heat-affected zone as compared to micro-plasma arc welding is more suitable for microwelding of titanium alloy.
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Acknowledgements
The authors gratefully acknowledge the kind support and assistance from Advanced Manufacturing Center, CSIR-CMERI, Durgapur, West Bengal, India to carry out this research work.
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Baruah, M., Bag, S. (2019). Laser Microwelding of Titanium Alloy. In: Dixit, U., Joshi, S., Davim, J. (eds) Application of Lasers in Manufacturing. Lecture Notes on Multidisciplinary Industrial Engineering. Springer, Singapore. https://doi.org/10.1007/978-981-13-0556-6_4
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