Mechanical and corrosion resistance analysis of laser cladding layer

To improve the mechanical properties and corrosion resistance of the hydraulic column in the mine, a semiconductor fiber-coupled laser was used to laser-clad iron-based alloy powder on a 27SiMn steel substrate (SUB). The microstructure, mechanical properties, and corrosion resistance of the obtained...

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Bibliographic Details
Published inScience and engineering of composite materials Vol. 29; no. 1; pp. 358 - 363
Main Authors Cui, Yinghao, Xie, Cong, Liu, Jialin, Guo, Shirui, Cui, Lujun
Format Journal Article
LanguageEnglish
Published Berlin De Gruyter 07.11.2022
Walter de Gruyter GmbH
Subjects
27SiMn
Alloy powders
Bonding strength
Coefficient of friction
Corrosion resistance
electrochemical corrosion
Ferrous alloys
Fiber lasers
friction and wear
Laser beam cladding
Mechanical properties
Microhardness
Substrates
Tensile strength
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Summary:To improve the mechanical properties and corrosion resistance of the hydraulic column in the mine, a semiconductor fiber-coupled laser was used to laser-clad iron-based alloy powder on a 27SiMn steel substrate (SUB). The microstructure, mechanical properties, and corrosion resistance of the obtained cladding layer (CL) were studied based on experiments. Results show that equiaxed grains at the top of the CL are fine and tightly arranged. Compared with the SUB, the CL average microhardness is increased by 0.3 times, the average friction coefficient is decreased by 0.12, and the wear amount is significantly reduced. The bonding strength between the CL and the SUB is good, and the tensile strength is increased by 10.82%. Compared with the SUB, the mechanical properties and corrosion resistance of the CL are better. The research has an important guiding significance for the practice of hydraulic column repair and strengthening engineering.
ISSN:2191-0359
0792-1233
2191-0359
DOI:10.1515/secm-2022-0161