• Laser & Optoelectronics Progress
  • Vol. 58, Issue 5, 0514007 (2021)
Fuguang Liu1, Yong Li1, Erjuan Yang1, Zihao Mi1, Bo Wang1, Gang Liu1, Menghua Song2、*, and Haiou Yang3、**
Author Affiliations
  • 1Institute of Welding and Repair Technology for Power Plant Materials, Xi'an Thermal Power Research Institute, Xi'an , Shaanxi 710054, China
  • 2School of Materials Engineering, Xi′an Aeronautical University, Xi'an , Shaanxi 710077, China
  • 3State Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi'an , Shaanxi 710072, China
  • show less
    DOI: 10.3788/LOP202158.0514007 Cite this Article Set citation alerts
    Fuguang Liu, Yong Li, Erjuan Yang, Zihao Mi, Bo Wang, Gang Liu, Menghua Song, Haiou Yang. A Research on Laser Cladding Co-Based Alloy to Repair Heat Resistant Steel of the Valves Used in Ultra-Super Critical Thermal Power Plants[J]. Laser & Optoelectronics Progress, 2021, 58(5): 0514007 Copy Citation Text show less
    Laser additive manufacturing system used in the experiment
    Fig. 1. Laser additive manufacturing system used in the experiment
    Schematic of laser cladding repair sample
    Fig. 2. Schematic of laser cladding repair sample
    Typical microstructures of laser cladding Stellite 6 Co-based alloy. (a) Macrostructure; (b) microstructure
    Fig. 3. Typical microstructures of laser cladding Stellite 6 Co-based alloy. (a) Macrostructure; (b) microstructure
    XRD patterns of nine samples
    Fig. 4. XRD patterns of nine samples
    Hardness profile of laser cladding repair samples. (a) 1#, 2# and 3# samples, parallel to the interface; (b) 1#, 2# and 3# samples, along the deposition direction; (c) 4#, 5# and 6# samples, parallel to the interface; (d) 4#, 5# and 6# samples, along the deposition direction; (e) 7#, 8# and 9# samples, parallel to the interface; (f) 7#, 8# and 9#, along the deposition direction
    Fig. 5. Hardness profile of laser cladding repair samples. (a) 1#, 2# and 3# samples, parallel to the interface; (b) 1#, 2# and 3# samples, along the deposition direction; (c) 4#, 5# and 6# samples, parallel to the interface; (d) 4#, 5# and 6# samples, along the deposition direction; (e) 7#, 8# and 9# samples, parallel to the interface; (f) 7#, 8# and 9#, along the deposition direction
    Bending strength of laser cladding repair samples
    Fig. 6. Bending strength of laser cladding repair samples
    Load-extension curves of laser cladding repair samples in three points bending testing
    Fig. 7. Load-extension curves of laser cladding repair samples in three points bending testing
    Samples after three-point bending testing. (a) 1# sample; (b) 2# sample; (c) 3# sample; (d) 4# sample; (e) 5# sample; (f) 6# sample; (g) 7# sample; (h) 8# sample; (i) 9# sample
    Fig. 8. Samples after three-point bending testing. (a) 1# sample; (b) 2# sample; (c) 3# sample; (d) 4# sample; (e) 5# sample; (f) 6# sample; (g) 7# sample; (h) 8# sample; (i) 9# sample
    Impact properties of laser cladding repair samples
    Fig. 9. Impact properties of laser cladding repair samples
    Porosity defects in laser cladding repair samples. (a) 2# sample; (b) 4# sample; (c) 7# sample
    Fig. 10. Porosity defects in laser cladding repair samples. (a) 2# sample; (b) 4# sample; (c) 7# sample
    ElementMass fraction/%
    C0.08-0.12
    Cr8.00-9.50
    Mo0.85-1.05
    Si0.20-0.50
    Mn0.30-0.50
    V0.18-0.25
    Nb0.06-0.10
    N0.03-0.07
    FeBal.
    Table 1. Chemical composition of SA182 F91 heat resistant steel
    ElementMass fraction/%
    C1.15
    Si1.10
    Cr29.00
    Mo1.00
    W4.00
    Fe3.00
    Ni3.00
    Mn0.50
    CoBal.
    Table 2. Chemical composition of Stellite 6 Co-based alloy powder
    No.Spot size/mmPower/WScanning speed/(mm·min-1Feeding rate /(g·min-1Lateral offset /mmVertical offset/mm
    13100060010.2420.70
    23150072010.2420.70
    3320008408.9620.50
    4410007208.962.20.45
    5415008408.962.20.45
    6420006008.962.20.60
    7510008408.962.50.40
    8515006008.962.50.60
    9520007208.962.50.60
    Table 3. Parameters used in laser cladding repair experiment
    Fuguang Liu, Yong Li, Erjuan Yang, Zihao Mi, Bo Wang, Gang Liu, Menghua Song, Haiou Yang. A Research on Laser Cladding Co-Based Alloy to Repair Heat Resistant Steel of the Valves Used in Ultra-Super Critical Thermal Power Plants[J]. Laser & Optoelectronics Progress, 2021, 58(5): 0514007
    Download Citation