Study of multi-layer deposition in L-DED process for 15–5 PH stainless steel: A numerical and experimental approach

Das, Tishta; Chandrakanth, Balaji; Samanta, Sudip Kumar; Lohar, Aditya Kumar

doi:10.1016/j.jmapro.2023.05.063

Cited by 7 publications

(1 citation statement)

References 46 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Economic losses are significant. Laser directed energy deposition (DED-L) [3][4][5][6][7][8][9], additive manufacturing method with coaxial powder feeding, has been widely developed to produce and repair damaged parts [7,[10][11][12][13]. Due to the low heat input and high cooling rate, applying DED-L in SX superalloys has aroused more attention.…”

Section: Introductionmentioning

confidence: 99%

Optimizing process for pulsed laser additive manufacturing of nickel-based single crystal superalloy

Ci,

Liang,

et al. 2023

Mater. Res. Express

View full text Add to dashboard Cite

The relationship between pulsed laser processing parameters and epitaxial growth of alloy is essential to additive manufacturing technology in repairing and manufacturing nickel-based single crystal (SX) superalloys. In this paper, orthogonal experiments of Laser Direct Energy Deposition (DED-L) process have been designed to optimize the process for the epitaxial growth of the SX superalloy. The relationship between process parameters and epitaxial growth of SX superalloy is established in a radar map, which shows that low laser power, pulse width and powder feeding rate help epitaxial growth in the DED-L process. It is implied that increasing the powder feeding rate value in the process range decreases the epitaxial growth rate of the molten pool and increases manufacturing efficiency. The size of the cladding layer width is greatly influenced by laser power (reached 44%) and pulse width (reached 38%). The deposited heigh of the cladding layer is mainly influenced by pulse width (reached 45%) and powder feeding rate (reached 42%). The process parameters have a similar level (approximately 33%) of influence on the powder using efficiency.

show abstract