Danielewski Hubert, Skrzypczyk Andrzej, Hebda Marek, Tofil Szymon, Witkowski Grzegorz, Długosz Piotr, Nigrovič Rastislav
Faculty of Mechatronics and Mechanical Engineering, Kielce University of Technology, Tysiąclecia Państwa Polskiego 7, 25-314 Kielce, Poland.
Faculty of Materials Engineering and Physics, Cracow University of Technology, Warszawska 24, 31-155 Cracow, Poland.
Materials (Basel). 2020 Dec 20;13(24):5819. doi: 10.3390/ma13245819.
This paper presents the results of laser welding of dissimilar joints, where low-carbon and stainless steels were welded inthe lap joint configuration. Performed welding of austenitic and ferritic-pearlitic steels included a sealed joint, where only partial penetration of lower material was obtained.The authors presented acomparative study of the joints under different configurations. The welding parameters for the assumed penetration were estimated via anumericalsimulation. Moreover, a stress-strain analysis was performed based on theestablished model. Numerical analysis showed significant differences in joint properties, therefore, further study was conducted. Investigation of the fusion mechanism in the obtained joints wascarried out using electron dispersive spectroscopy (EDS) and metallurgical analysis. The study of the lap joint under different configurations showed considerable dissimilarities in stress-strain distribution and relevant differences in the fusion zone structure. The results showed advantages of using stainless steel as the upper material of a microstructure, and uniform chemical element distribution and stress analysis is considered.
本文介绍了异种接头激光焊接的结果，其中低碳钢和不锈钢采用搭接接头形式进行焊接。奥氏体钢和铁素体-珠光体钢的焊接包括一个密封接头，其中仅获得了下层材料的部分熔深。作者对不同结构的接头进行了对比研究。通过数值模拟估算了假定熔深的焊接参数。此外，基于建立的模型进行了应力应变分析。数值分析表明接头性能存在显著差异，因此进行了进一步研究。使用电子能谱（EDS）和金相分析对接头中的熔合机制进行了研究。对不同结构搭接接头的研究表明，应力应变分布存在相当大的差异，熔合区结构也存在相关差异。结果表明，使用不锈钢作为微观结构的上层材料具有优势，同时考虑了化学元素的均匀分布和应力分析。
