Characteristics of Interdendritic Residual Austenite in Laser Cladding of High Hardness Iron-Based Coating

Linqi, 李林起 Li; Chengwu, 姚成武 Yao; Jian, 黄坚 Huang; Kai, 冯凯 Feng; Zhuguo, 李铸国 Li

doi:10.3788/cjl201744.0302011

Cited by 3 publications

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“…What's more, different phase compositions (ferrite, austenite, martensite) could be obtained by adjusting the composition [4][5][6][7]. Li Linqi et al [8] designed a high hardness iron-based coatings with interdendritic ductile austenite phase. The average hardness of the coatings was about 775 HV, and no crack defects were found.…”

Section: Introductionmentioning

confidence: 99%

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Research on microstructure transformation and property of 18Cr–0.2C Fe-based coatings

Yin

Pan

Zhang

et al. 2019

Surface Engineering

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In this study, the coatings were fabricated on the 3Cr13 stainless steel substrate by laser cladding. The microstructure, phase compositions and the detailed information about the crack propagation of the coatings were investigated systematically. A comparative study on the corrosion resistance of the traditional of 3Cr13 stainless steel and laser cladding blades was conducted. The standard Gibbs free energy variation of carbides, phase composition and precipitation sequence were precisely calculated. The results showed that the microstructure near the fusion zone was mainly composed of cellular crystals and dendrites. Meanwhile, its microstructure had changed in the upper middle of the coatings. The calculated results showed that the phases formed at the equilibrium state consisted of α-Ferrite, σ and M23C6 carbide. In the vicinity of fusion line and the middle of the coatings, the crack distributed along α-Ferrite grain boundaries. On the top of coatings, the crack traversed the matrix and carbide.

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Section: Introductionmentioning

confidence: 99%

“…Li Linqi et al. [8] designed a high hardness iron-based coatings with interdendritic ductile austenite phase. The average hardness of the coatings was about 775 HV, and no crack defects were found.…”

Section: Introductionmentioning

confidence: 99%

Research on microstructure transformation and property of 18Cr–0.2C Fe-based coatings

Yin

Pan

Zhang

et al. 2019

Surface Engineering

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Advancement in cermet based coating on steel substrate: A review

Alam

Das

2022

Materials Today: Proceedings

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Progress in Microstructure Design and Control of High-Hardness Fe-Based Alloy Coatings via Laser Cladding

Liu,

Lin,

Peng

et al. 2024

Coatings

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High-hardness iron-based alloy coatings are extensively utilized in aerospace, automotive, and industrial equipment due to their exceptional wear resistance and long service life. Laser cladding has emerged as one of the primary techniques for fabricating these coatings, owing to its rapid cooling and dense microstructure characteristics. However, the production of high-hardness iron-based alloy coatings via laser cladding continues to face numerous challenges, particularly when controlling the morphology, quantity, and distribution of the reinforcing phases, which can lead to cracking during processing and service, thus compromising their usability. The cracks of the cladding layer will be suppressed through good microstructure design and control, resulting in a wide range of performance for high-hardness Fe-based alloy coatings. This paper reviews recent advancements in the design and control of the organization and structure of high-hardness iron-based alloy coatings from the perspectives of material composition, processing parameters, and external assistance techniques. It summarizes the properties and applications of various materials, including different alloying elements, ceramic particles, and rare earth oxides, while systematically discussing how processing parameters influence microstructure and performance. Additionally, the mechanisms by which external auxiliary energy fields affect the melt pool and solidified microstructure during laser cladding are elucidated. Finally, the future development directions of laser cladding technology for high-hardness iron-based coatings are anticipated, emphasizing the need for further quantification of the optimal coupling relationships among the gain effects of composite energy fields.

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Characteristics of Interdendritic Residual Austenite in Laser Cladding of High Hardness Iron-Based Coating

Cited by 3 publications

References 0 publications

Research on microstructure transformation and property of 18Cr–0.2C Fe-based coatings

Research on microstructure transformation and property of 18Cr–0.2C Fe-based coatings

Advancement in cermet based coating on steel substrate: A review

Progress in Microstructure Design and Control of High-Hardness Fe-Based Alloy Coatings via Laser Cladding

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