Microstructures and Properties of Fe-Based Coating Prepared by High-Speed Laser Cladding and Remelting

Zhihu Zhang; Wenlei Sun; Yong Huang; Jinduo Liu

doi:10.3788/LOP202158.2114009

Laser & Optoelectronics Progress, Volume. 58, Issue 21, 2114009(2021)

Microstructures and Properties of Fe-Based Coating Prepared by High-Speed Laser Cladding and Remelting

Zhihu Zhang¹, Wenlei Sun^1、*, Yong Huang², and Jinduo Liu¹

Author Affiliations

¹School of Mechanical Engineering, Xinjiang University, Urumqi , Xinjiang 830047, China

²School of Mechanical and Electrical Engineering, Xinjiang Institute of Engineering, Urumqi , Xinjiang 830023, China

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Figures & Tables(11)

Fig. 1. Macroscopic surface morphology of sample after cladding

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Fig. 2. Surface topographies under ultra depth of field microscope. (a) High-speed laser cladding surface; (b) laser remelting surface

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Fig. 3. XRD analysis of high-speed laser cladding and remelting layer surfaces

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Fig. 4. Microstructures of high-speed laser cladding and remelting layers. (a) Cross-section of cladding layer; (b) top area of cladding layer; (c) middle area of cladding layer; (d) bottom area of cladding layer; (e) cross-section of remelting layer; (f) top area of remelting layer; (g) middle area of remelting layer; (h) bottom area of remelting layer

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Fig. 5. Element distribution of coating

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Fig. 6. Hardness distribution of coating

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Fig. 7. Wear performances of sample. (a) Wear weight loss; (b) friction coefficient

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Fig. 8. Wear morphologies under ultra depth of field microscope. (a) Substrate; (b) cladding layer; (c) remelting layer

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Table 1. Compositions of 27SiMn steel
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Table 1. Compositions of 27SiMn steel
Element C Si Mn V Ni Cu S P
Mass fraction /% 0.24-0.32 1.10-1.40 1.10-1.40 0.07-0.12 ≤0.3 ≤0.3 ≤0.04 ≤0.04

Table 2. Main chemical compositions of Fe90 alloy powder
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Table 2. Main chemical compositions of Fe90 alloy powder
Element C Si Mo Cr B Fe
Mass fraction /% 0.15 1.2 0.5 12.5 1.6 Bal.

Table 3. Process parameters for test
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Table 3. Process parameters for test
Process P /W V_f /（g·min^-1） V_s /（mm·s^-1） D /%
High-speed laser cladding 1800 67 136 81
Remelting 1800 0 212 81

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Zhihu Zhang, Wenlei Sun, Yong Huang, Jinduo Liu. Microstructures and Properties of Fe-Based Coating Prepared by High-Speed Laser Cladding and Remelting[J]. Laser & Optoelectronics Progress, 2021, 58(21): 2114009

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