Comparative study of stainless steel AISI 431 coatings prepared by extreme-high-speed and conventional laser cladding

Liqun Li; Faming Shen; Yuandong Zhou; Wang Tao

doi:10.2351/1.5094378

Comparative study of stainless steel AISI 431 coatings prepared by extreme-high-speed and conventional laser cladding

Liqun Li
, Faming Shen^*
, Yuandong Zhou
, Wang Tao

^*Corresponding author for this work

School of Materials Science and Engineering

Harbin Institute of Technology

Research output: Contribution to journal › Article › peer-review

83 Scopus citations

Abstract

High quality 431 steel coatings were prepared on a 27SiMn substrate by extreme-high-speed laser cladding (EHLA) and conventional laser cladding (CLA), respectively. The cladding speed of the EHLA process was 150 m/min, and the surface rate could reach up to 1.14 m²/h, which is four times higher than that of the CLA process. The microstructure of the coatings was investigated in detail. The microstructure of both coatings was dominated by dendrites. Benefitting from the ultrahigh cooling rate, the dendrites of EHLA coatings were more refined than that of CLA coatings. The element distribution between dendrites and interdendritic regions was more uniform. The corrosion resistance was evaluated by electrochemical tests. The results indicated that the EHLA coatings performed better corrosion resistance due to the fine uniform microstructure.

Original language	English
Article number	042009
Journal	Journal of Laser Applications
Volume	31
Issue number	4
DOIs	https://doi.org/10.2351/1.5094378
State	Published - 1 Nov 2019

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10.2351/1.5094378

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title = "Comparative study of stainless steel AISI 431 coatings prepared by extreme-high-speed and conventional laser cladding",

abstract = "High quality 431 steel coatings were prepared on a 27SiMn substrate by extreme-high-speed laser cladding (EHLA) and conventional laser cladding (CLA), respectively. The cladding speed of the EHLA process was 150 m/min, and the surface rate could reach up to 1.14 m2/h, which is four times higher than that of the CLA process. The microstructure of the coatings was investigated in detail. The microstructure of both coatings was dominated by dendrites. Benefitting from the ultrahigh cooling rate, the dendrites of EHLA coatings were more refined than that of CLA coatings. The element distribution between dendrites and interdendritic regions was more uniform. The corrosion resistance was evaluated by electrochemical tests. The results indicated that the EHLA coatings performed better corrosion resistance due to the fine uniform microstructure.",

author = "Liqun Li and Faming Shen and Yuandong Zhou and Wang Tao",

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T1 - Comparative study of stainless steel AISI 431 coatings prepared by extreme-high-speed and conventional laser cladding

AU - Li, Liqun

AU - Shen, Faming

AU - Zhou, Yuandong

AU - Tao, Wang

PY - 2019/11/1

Y1 - 2019/11/1

N2 - High quality 431 steel coatings were prepared on a 27SiMn substrate by extreme-high-speed laser cladding (EHLA) and conventional laser cladding (CLA), respectively. The cladding speed of the EHLA process was 150 m/min, and the surface rate could reach up to 1.14 m2/h, which is four times higher than that of the CLA process. The microstructure of the coatings was investigated in detail. The microstructure of both coatings was dominated by dendrites. Benefitting from the ultrahigh cooling rate, the dendrites of EHLA coatings were more refined than that of CLA coatings. The element distribution between dendrites and interdendritic regions was more uniform. The corrosion resistance was evaluated by electrochemical tests. The results indicated that the EHLA coatings performed better corrosion resistance due to the fine uniform microstructure.

AB - High quality 431 steel coatings were prepared on a 27SiMn substrate by extreme-high-speed laser cladding (EHLA) and conventional laser cladding (CLA), respectively. The cladding speed of the EHLA process was 150 m/min, and the surface rate could reach up to 1.14 m2/h, which is four times higher than that of the CLA process. The microstructure of the coatings was investigated in detail. The microstructure of both coatings was dominated by dendrites. Benefitting from the ultrahigh cooling rate, the dendrites of EHLA coatings were more refined than that of CLA coatings. The element distribution between dendrites and interdendritic regions was more uniform. The corrosion resistance was evaluated by electrochemical tests. The results indicated that the EHLA coatings performed better corrosion resistance due to the fine uniform microstructure.

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DO - 10.2351/1.5094378

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JO - Journal of Laser Applications

JF - Journal of Laser Applications

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ER -

Comparative study of stainless steel AISI 431 coatings prepared by extreme-high-speed and conventional laser cladding

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