Ganjiang Feng

Laser hot-wire welding for minimizing defects

The objective of laser hot-wire welding is to provide a low heat input procedure which could minimize defects in crack sensitive supper alloys and increase over all deposition rates in cladding operations. Another potential benefit of laser hot-wire welding is that thermal distortion effect are greatly reduced. A continuous wave (CW) neodymium (Nd): yttrium-aluminum-garnet (YAG) operating in the kilowatt regime was used to successfully weld similar and dissimilar crack sensitive supper alloys. Results will include welding data that addresses joints with gaps greater than 0.5 mm.The objective of laser hot-wire welding is to provide a low heat input procedure which could minimize defects in crack sensitive supper alloys and increase over all deposition rates in cladding operations. Another potential benefit of laser hot-wire welding is that thermal distortion effect are greatly reduced. A continuous wave (CW) neodymium (Nd): yttrium-aluminum-garnet (YAG) operating in the kilowatt regime was used to successfully weld similar and dissimilar crack sensitive supper alloys. Results will include welding data that addresses joints with gaps greater than 0.5 mm.