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논문 기본 정보

자료유형
학술저널
저자정보
Lanh Ngoc Trinh (Kongju National University) Dongkyoung Lee (Kongju National University)
저널정보
대한용접·접합학회 대한용접·접합학회지 大韓熔接·接合學會誌 第38卷 第4號
발행연도
2020.8
수록면
389 - 394 (6page)

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초록· 키워드

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In battery packing, the battery case and tab should be joined; fabricating this joint has been a challenging issue owing to dissimilar base materials and different thicknesses. A battery case is generally made of steel as it demonstrates high strength and hardness as well as excellent corrosion resistance; an aluminum tab has significant ductility and thermal expansion, thereby making it challenging to weld the joint. Laser welding is a non-contact technology providing rapid cooling. Therefore, it has been applied for the welding of several dissimilar metals joints. Joints welded through this technology result in a reduction of the brittle intermetallic phase and lower electrical resistance compared with other technologies. In this paper, the battery case and thin tab were welded via pulse laser irradiation. The experiment was performed with the laser power ranging from 10 to 20 W, and the remaining parameters were constant. The welding results were analyzed in terms of macrostructure and mechanical performance. Images from the scanning electron microscope showed that the laser power significantly influences the welding joints. Chemical composition analysis of the cross section presented two significant diffused material parts in the fusion zone. Hardness, which characterizes the mechanical properties of the joints, exhibited significant differences between the base material and fusion zone as well as the two diffused parts in the fusion zone.

목차

Abstract
1. Introduction
2. Materials
3. Experiment
4. Result and Discussion
5. Conclusion
Reference

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