期刊
MATERIALS AND MANUFACTURING PROCESSES
卷 23, 期 2, 页码 169-174出版社
TAYLOR & FRANCIS INC
DOI: 10.1080/10426910701774692
关键词
bevelled edge; butt welded joint; laser beam; Levenburg-Marquardt algorithm; metallography; Microanalysis; multilayer feedforward network; neural network; powder filler metal; powder loss; powder rate; square edge; steel plates; welding; welding speed
Laser beam welding of C-Mn steel plates with Ni powder filler metal has been performed. Metallography samples of the welded cross-section have been observed by scanning electron microscopy (SEM) and submitted to energy dispersive spectroscopy to obtain Ni concentration profiles. On the basis of the experimental results, neural networks have been carried out. These networks were first validated and then utilized to foresee Ni concentration along the welded thickness. The objective of obtaining the best Ni penetration and minimizing powder loss was reached optimizing, by numerical simulation, process parameters, such as powder rate and joint geometry.
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