Regulation Research on Microstructure of Laser Cladding under Electric-Magnetic Synergistic Effect

Liang, 王梁 Wang; Shiying, 宋诗英 Song; Yong, 胡勇 Hu; Jianhua, 姚建华 Yao

doi:10.3788/cjl201542.s103005

Cited by 4 publications

(1 citation statement)

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“…Therefore, some scholars have proposed a method to control the solidification structure of laser cladding by the electric-magnetic auxiliary field. The current research usually used the combination of a DC electric field and a steady magnetic field to induce a constant direction of electromagnetic force, which is used to reduce the porosity in the coating and to change the fluid motion state in the molten pool [6,7]. However, the studies of alternating electromagnetic force produced by electricmagnetic composite field in the laser cladding process have not been reported.…”

Section: Introductionmentioning

confidence: 99%

Influence on the Microstructure of Laser Cladding NiCrBSi Coatings with Electromagnetic Compound Field

Zhai

Zhang

Ban

2019

SSP

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A NiCrBSi coating was produced on a pure iron plate by laser cladding technology. Electric-magnetic compound field was applied in order to improve the quality of coating. The effect of electric-magnetic compound field on the microstructure and the phase composition of coating was investigated by OM and XRD, respectively. The results indicated that the phase composition of the coatings were γ-(Fe,Ni), Cr23C6, Cr7C3, CrB and Ni3B with and without electromagnetic field. Microstructural observation showed that the grains were refined obviously by electromagnetic stirring. The electromagnetic stirring could change the direction of the heat dissipation and changed the direction of the columnar crystal at the bottom of the coating. High qualitative coating without porosity were obtained under electromagnetic field.

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Section: Introductionmentioning

confidence: 99%