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Publikováno v:
Optics & Laser Technology. 118:84-92
316L stainless steel plate with a trapezoidal groove was repaired by laser metal deposition (LMD) with 316L stainless steel powder. Finite element method (FEM) is adopted to predict the thermal behavior in the molten pool during the LMD. There is an
Publikováno v:
Surface and Coatings Technology. 437:128370
Publikováno v:
Optics & Laser Technology. 109:71-83
Laser metal deposition was used to repair grooves on 20 mm thickness 316L stainless steel plates using two different 316L stainless steel commercial powders – Fe-0.15C-11.8Cr-0.15Mn-0.2Ni-0.031P-0.56Si-0.05S (wt.%) powder and Fe-0.09C-17.05Cr-1.2Mn
Publikováno v:
Surface and Coatings Technology. 351:198-211
HSLA-100 steel substrates with pre-machined trapezoidal grooves were repaired by laser metal deposition with HSLA-100 and nickel base alloy (GH3536) powders. The grooves can be restored and good metallurgical bonding was achieved. The microstructure
Publikováno v:
Journal of Manufacturing Processes. 34:106-120
A numerical simulation with sequential coupled thermal-mechanical finite element model has been performed for analyzing the temperature field, residual stresses and distortions in NV E690 weldment fabricated by hybrid laser-arc welding (HLAW). For th
Publikováno v:
Materials Science and Engineering: A. 831:142186
Underwater directed energy deposition (UDED) is a promising technology for on-site maintenance and repair of underwater structures. In this study, the damage zone on a Ti–6Al–4V plate was successfully repaired by UDED and no obvious internal defe
Publikováno v:
Surface and Coatings Technology. 421:127450
Quasi-Continuous-Wave laser direct energy deposition offers a number of advantages, such as a lower heat accumulate, a higher cooling rate and improved mechanical properties over Continuous-Wave counterpart. However, how pulse frequency of Quasi-Cont
Publikováno v:
Materials & Design, Vol 127, Iss, Pp 297-310 (2017)
Hybrid laser-arc welding (HLAW) was carried out on 690MPa high strength NV E690 steel plates of 15mm thickness using single-pass and double-pass welding processes. Fine weld joints with good performance were successfully obtained by double-pass HLAW.
Publikováno v:
Additive Manufacturing. 39:101884
A novel underwater directed energy deposition (UDED) technique was developed for the on-site repair of marine equipment in an underwater environment. A special drainage nozzle was integrated with a laser cladding head to form the underwater manufactu