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- W2000363357 abstract "In the present work, the densification and microstructural evolution during direct laser sintering of metal powders were studied. Various ferrous powders including Fe, Fe–C, Fe–Cu, Fe–C–Cu–P, 316L stainless steel, and M2 high-speed steel were used. The empirical sintering rate data was related to the energy input of the laser beam according to the first order kinetics equation to establish a simple sintering model. The equation calculates the densification of metal powders during direct laser sintering process as a function of operating parameters including laser power, scan rate, layer thickness and scan line spacing. It was found that when melting/solidification approach is the mechanism of sintering, the densification of metals powders (D) can be expressed as an exponential function of laser specific energy input (ψ) as ln(1 − D) = −Kψ. The coefficient K is designated as “densification coefficient”; a material dependent parameter that varies with chemical composition, powder particle size, and oxygen content of the powder material. The mechanism of particle bonding and microstructural features of the laser sintered powders are addressed." @default.
- W2000363357 created "2016-06-24" @default.
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- W2000363357 date "2006-07-01" @default.
- W2000363357 modified "2023-10-18" @default.
- W2000363357 title "Direct laser sintering of metal powders: Mechanism, kinetics and microstructural features" @default.
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- W2000363357 doi "https://doi.org/10.1016/j.msea.2006.04.117" @default.
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