Sánchez, C.; Bustos, O.; Artigas, A.; Bruna, H. Silicon Effect and Microstructural Evolution of Hot Dip Galvanized Coating of Structural Steels. Metals2023, 13, 1892.
Sánchez, C.; Bustos, O.; Artigas, A.; Bruna, H. Silicon Effect and Microstructural Evolution of Hot Dip Galvanized Coating of Structural Steels. Metals 2023, 13, 1892.
Sánchez, C.; Bustos, O.; Artigas, A.; Bruna, H. Silicon Effect and Microstructural Evolution of Hot Dip Galvanized Coating of Structural Steels. Metals2023, 13, 1892.
Sánchez, C.; Bustos, O.; Artigas, A.; Bruna, H. Silicon Effect and Microstructural Evolution of Hot Dip Galvanized Coating of Structural Steels. Metals 2023, 13, 1892.
Abstract
The microstructure of the coating during hot-dip galvanizing under industrial conditions of two structural steels, a low-silicon ASTM A36 steel and a high-silicon Q345B steel, both of commercial quality, have been characterized for industrial-relevant times. For both cases it is noted that the formation of the Fe-Zn phases begins in early stages during the heating of the steel, a situation in which all the phases are in the solid state. The characterization was carried out through traditional metallographic techniques including SEM-EDS and DRX equipment. The evolution in time of the microstructure of both steels is examined, being able to observe that the mechanism by which silicon accelerates the formation of Fe-Zn phases in galvanizing is related to the change in the energy of the interfaces caused by a silicon accumulation in the liquid phase in contact with the ζ layer. These results provided us with a deeper understanding of the phase evolution in the hot-dip galvanizing of high silicon steels.
Keywords
hot dip galvanizing; silicon steels; sandelin
Subject
Engineering, Metallurgy and Metallurgical Engineering
Copyright:
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