Abstract
Laser cladding technology has been widely applied in industrial production because of its prominent advantage in surface modification. To achieve improved microstructure characteristics and performance, it is essential to investigate the solidification mechanism of the microstructures formed during laser cladding. In this study, the columnar-to-equiaxed transition for laser-clad 316L was predicted using a three-dimensional finite element model coupled with electron backscatter diffraction analysis. First, the distribution of thermodynamic variables at different laser powers was examined. Then, the fitting curve for predicting the columnar-to-equiaxed transition was established, and the results indicate that the solidification of laser-clad 316L can be accurately predicted. Moreover, the grain size distribution for different laser powers was counted, and the average grain size of the molten pool was shown to increase with increasing laser power. This work will serve as a guide for the crystal transition in the solidification process for laser cladding.
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Funding
The present study was supported by the National Natural Science Foundation of China (Grant No. 51504198), the National Science Foundation of China (Grant No. 51474178), and the Fundamental Research Funds for the Central Universities (Grant No. A0920502051820-48).
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Ma, P., Wu, Y., Zhang, P. et al. Solidification prediction of laser cladding 316L by the finite element simulation. Int J Adv Manuf Technol 103, 957–969 (2019). https://doi.org/10.1007/s00170-019-03566-9
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DOI: https://doi.org/10.1007/s00170-019-03566-9