A new method for laser grooving titanium alloy with the assist of a hybrid of gas jet and waterjet

Ma, Yanzhao; Zhao, Wu; Zhang, Haitao; Fan, Chunhai; Zhang, Xu; Li, Deng

doi:10.1016/j.jmatprotec.2023.117906

Cited by 9 publications

(1 citation statement)

References 37 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, such multiscale textures are generally created using machine tools such as wire cutters, which makes their practical application complicated. Note that during laser cleaning to remove the surface rust layer, the high-energy pulsed laser also ablates and vaporises a small amount of the substrate to leave shallow thin grooves on the surface [24]. Zhu et al [25] performed laser cleaning before welding a steel plate and found that laser cleaning significantly improved the tensile strength of the weld head location.…”

Section: Introductionmentioning

confidence: 99%

Laser Cleaning Combined with Cladding Improves Cladding Quality for Repairing Steel Plates in Pressure Vessels

Fan,

Shi,

et al. 2024

Coatings

View full text Add to dashboard Cite

Good-quality metallurgical bonding and a high degree of automation are critical for using laser cladding technology in on-site repairs. At present, most of the on-site repairs are carried out manually, which can bring about problems such as complicated operation procedures, uneven repair quality, and personnel injuries. In this study, a surface repair method that combined laser cleaning with cladding (LCC) was proposed. First, the plates were scanned with a high-frequency pulsed laser to remove the surface impurity layer. The surface was then coated with Inconel 625 powder while irradiated with a continuous laser for the cladding. Both the macro-morphology and microstructure of the surface were examined, and mechanical property tests were also conducted. The metallographic and scanning electron microscope images indicated that, compared to the manual polishing and laser cladding process, the LCC specimens had a better metallurgical bonding quality and a thicker clad layer. The average hardness of the clad layer on the LCC specimens was high at 256.47 HV, 36.2% higher than that of the Q345R substrate. Compared to the Q345R specimens of the same size, the LCC specimens showed an increased impact on the energy absorption, yield strength, and tensile strength. This study provides a new approach for improving the automation and cladding quality of on-site repairs.

show abstract

Section: Introductionmentioning

confidence: 99%