Laser & Optoelectronics Progress, Volume. 58, Issue 23, 2314005(2021)
Dilution Rate of Laser Cladded Ultrahigh Strength Steel
Figures & Tables(16)
Fig. 4. Cladding tracks formed at constant powder heat absorption rate and variable scanning rates as well as constant scanning rate and variable powder heat absorption rates
Fig. 5. Geometrical morphologies of cladding bead cross-section formed at constant powder heat absorption rate and variable scanning rates
Fig. 6. Variations of cross-section size of cladding bead formed at constant powder heat absorption rate and variable scanning rates
Fig. 7. Microhardness distribution of cladding beads formed at constant powder heat absorption rate and variable scanning rates
Fig. 8. Geometrical morphologies of cladding bead cross-section formed at constant scanning speed and variable powder heat absorption rates
Fig. 9. Variations of cross-section size of cladding bead formed at constant scanning speed and variable powder heat absorption rates
Fig. 10. Microhardness distribution of cladding bead formed at constant scanning speed and variable powder heat absorption rates
Fig. 11. Microshear test results with and without dilution rate. (a) Microshear test points; (b) tested interface bonding strength and shear strength
Table 1. Chemical composition of new martensitic stainless steel 12Cr17Ni2B
View tableTable 1. Chemical composition of new martensitic stainless steel 12Cr17Ni2B
Element C Ni Cr Si B V Fe Mass fraction /% 0.12 2.46 16.87 0.77 0.64 0.22 Bal.
Table 2. Nominal composition of 300M steel
View tableTable 2. Nominal composition of 300M steel
Element C Ni Cr Si V Mn Cu Mo Fe Mass fraction /% 0.38-0.43 1.65-2.0 0.70-0.95 1.45-1.80 0.05-0.10 0.60-0.90 ≤0.35 0.30-0.50 Bal.
Table 3. Single factor experimental process parameters
View tableTable 3. Single factor experimental process parameters
Constant powder heat absorption rate Constant scanning rate No. Power /kW Powder feed rate /（g·min-1） Scanning rate /（mm·min-1） No. Power /kW Powder feed rate /（g·min-1） Scanning rate /（mm·min-1） R1 1.7 13.1 350 P1 1.1 R2 420 P2 1.2 R3 840 P3 1.25 13.1 1680 R4 1260 P4 1.3 R5 1680 P5 1.4 R6 2100 P6 1.5 R7 2520 R8 2940
Table 4. Geometrical sizes of cladding bead formed at constant powder heat absorption rate and variable scanning rates
View tableTable 4. Geometrical sizes of cladding bead formed at constant powder heat absorption rate and variable scanning rates
No. Process parameter Geometrical size Power /kW Powder feed rate /（g·min-1） Scanning rate /（mm·min-1） Tc /μm W /μm Contact angle /（°） Tp /μm W/Tc Ap /（Ac+Ap） /% R1 1.7 13.1 350 1708.8 3182.5 40.1 778. 6 1.9 5.9 R2 420 1533.0 3349.2 42.2 742.9 2.2 14.2 R3 840 890.1 2865.1 36.1 635.7 3.2 19.4 R4 1260 620.9 2317.5 29.2 550.0 3.7 21.4 R5 1680 461.5 2159.5 27.2 414.3 4.7 25.9 R6 2100 362.6 2119.8 26.7 400.0 5.8 26.7 R7 2520 335.2 2150.8 27.1 378. 6 6.4 36.5 R8 2940 274.7 1793.7 22.6 342. 9 6.5 29.5
Table 5. Geometrical size of cladding bead cross-section formed at constant scanning speed and variable powder heat absorption rates
View tableTable 5. Geometrical size of cladding bead cross-section formed at constant scanning speed and variable powder heat absorption rates
No. Process parameter Geometrical size Power /kW Powder feed rate /（g·min-1） Scanning rate /（mm·min-1） Tc /μm W / μm Contact angle /（°） Tp /μm W /Tc Ap /（Ac+Ap） /% P1 1.1 13.1 1680 351.9 1506.2 41.5 365.2 4.3 1.9 P2 1.2 309.5 1660.7 45.0 324.6 5.4 11.9 P3 1.25 333.3 1801.3 43.5 352.4 5.4 11.5 P4 1.3 333.5 1816.1 38.2 324.5 5.4 23.7 P5 1.4 375.0 1694.4 56.8 303. 6 4.5 26.0 P6 1.5 386.1 1879.7 36.3 342.2 4.9 20.5
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Yan Liu, Pengshuai Liu, Yang Guo, Zongjin Li, Qinglin Zhang, Linjie Zhang, Jianxun Zhang. Dilution Rate of Laser Cladded Ultrahigh Strength Steel[J]. Laser & Optoelectronics Progress, 2021, 58(23): 2314005
Paper Information
Category: Lasers and Laser Optics
Received: --
Accepted: Mar. 12, 2021
Published Online: Dec. 9, 2021
The Author Email: Zhang Jianxun (jxzhang@mail.xjtu.edu.cn)
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