Inconel 718 Coating Process for Laser Remanufacturing Three-Dimensional Forming of K418 Blades

Jie Xu; Jinyu Zhou; Weibin Ren; Yaozhong Lu; Xianyi Xu

doi:10.3788/LOP57.031401

Laser & Optoelectronics Progress, Volume. 57, Issue 3, 031401(2020)

Inconel 718 Coating Process for Laser Remanufacturing Three-Dimensional Forming of K418 Blades

Jie Xu¹, Jinyu Zhou^2、*, Weibin Ren¹, Yaozhong Lu¹, and Xianyi Xu³

Author Affiliations

¹School of Mechanical Engineering, Jiangsu University of Technology, Changzhou, Jiangsu 213001, China

²Jinling Institute of Technology Electrical Engineering, Nanjing, Jiangsu 211169, China

³Jiangsu Institute, China Academy of Machinery Science & Technology Co., Ltd., Changzhou, Jiangsu 213001, China;

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Figures & Tables(10)

Fig. 1. Laser remanufacturing forming system. (a) Schematic diagram; (b) scene diagram

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Fig. 2. Microstructure under condition of process 1. (a) Cladding metallographic microstructure; (b) top of microstructure; (c) middle of microstructure; (d) bottom of microstructure

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Fig. 3. Microstructure under condition of process 2. (a) Cladding metallographic microstructure; (b) top of microstructure; (c) middle of microstructure; (d) bottom ofmicrostructure

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Fig. 4. Microhardness distribution of cladding layer under conditions of processes 1 and 2

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Fig. 5. Microhardness distribution of three-dimensional formed Inconel 718 cladding layer

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Fig. 6. Microstructure and precipitation phase of underlying cladding layer. (a) Microstructure; (b) precipitate phase

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Fig. 7. Laser remanufacturing forming test of K418 blade. (a) Morphology before remanufacturing forming; (b) morphology after remanufacturing forming

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Table 1. Main element components of K418 substrate and Inconel 718 powder (mass fraction, %)
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Table 1. Main element components of K418 substrate and Inconel 718 powder (mass fraction, %)
Element Cr Mo Fe Al Ti C Nb Ni
K418 11.5-13.5 3.8-4.8 0-1 5.5-6.4 0.50-1 0.08-0.16 — Bal.
Inconel 718 17-21 2.8-3.3 — 0.3-0.7 0.75-1.15 0.02-0.06 5-5.5 Bal.

Table 2. Process parameters of laser single-pass cladding forming test on Inconel 718
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Table 2. Process parameters of laser single-pass cladding forming test on Inconel 718
No. Power /kW Scanningspeed /(mm·min^-1) Feeding ratespeed v /(g·min^-1) Carrier gas flowV_g /(L·min^-1)
1 1.2 300 25 3
2 2.0 360 30 3
3 2.5 360 30 3

Table 3. Macroscopic size of Inconel 718 cladding layer
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Table 3. Macroscopic size of Inconel 718 cladding layer
No. Cladding heightH /mm Cladding widthW /mm Lappingratio η /%
1 1.537 1.414 10.09
2 1.734 1.565 16.28
3 1.851 1.947 22.81

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Jie Xu, Jinyu Zhou, Weibin Ren, Yaozhong Lu, Xianyi Xu. Inconel 718 Coating Process for Laser Remanufacturing Three-Dimensional Forming of K418 Blades[J]. Laser & Optoelectronics Progress, 2020, 57(3): 031401

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Paper Information

Category: Lasers and Laser Optics

Received: May. 15, 2019

Accepted: Jul. 23, 2019

Published Online: Feb. 17, 2020

The Author Email: Zhou Jinyu (yuhangyuan888@sina.com)

DOI:10.3788/LOP57.031401

Topics

laser devices and laser physics

Lasers and Laser Optics

Laser physics

laser manufacturing

Instrumentation, Measurement and Metrology

Table 1. Main element components of K418 substrate and Inconel 718 powder (mass fraction, %)

Table 1. Main element components of K418 substrate and Inconel 718 powder (mass fraction, %)

Table 2. Process parameters of laser single-pass cladding forming test on Inconel 718

Table 2. Process parameters of laser single-pass cladding forming test on Inconel 718

Table 3. Macroscopic size of Inconel 718 cladding layer

Table 3. Macroscopic size of Inconel 718 cladding layer