Formation characteristics of nickel-based diamond abrasive segment by selective laser melting

Li, Shuai; Bi, Zhongnan; Jiang, Qinghong; Han, Hongjun; Wen, Jing; Zhang, Cong

doi:10.1016/j.optlastec.2021.107665

Cited by 10 publications

(2 citation statements)

References 33 publications

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“…Changing the value of surface tension due to the mentioned mechanism will change various rheological properties [38,39] such as a droplet, capillarity force, work adhesion, drag forces (due to solid-liquid transition), and interaction of surface tension, wetting, recoil pressure, hydrostatic and vapor pressures. These factors change the thermal history of the printed components (thermal effect of the previous solidified tracks) and will change the residual stress [40,41] of the components.…”

Section: Tablementioning

confidence: 99%

The effect of absorption ratio on meltpool features in laser-based powder bed fusion of IN718

Khorasani¹,

Ghasemi

Leary³

et al. 2022

Optics & Laser Technology

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Section: Tablementioning

confidence: 99%

The effect of absorption ratio on meltpool features in laser-based powder bed fusion of IN718

Khorasani¹,

Ghasemi

Leary³

et al. 2022

Optics & Laser Technology

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“…Diamonds are promising for their high hardness, wear resistance, and chemical stability. They have been widely applied in the field of precision manufacturing [ 1 , 2 , 3 , 4 ]. As an advanced diamond tool manufacturing technology in recent years, laser powder bed fusion (LPBF) has drawn much attention and has been studied [ 5 , 6 ].…”

Section: Introductionmentioning

confidence: 99%

Numerical Simulation of Temperature Characteristics and Graphitization Mechanism of Diamond in Laser Powder Bed Fusion

Chen,

Zhang,

Liu

et al. 2023

Materials

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Thermal damage to diamonds is a major limitation in laser powder bed fusion (LPBF) processing of metal matrix diamond composites. In this paper, a numerical simulation model was established to describe the thermal effect of the Diamond-CuSn10 composite on the LPBF process. The simulation results show that the temperature of the diamond presents a double-peak structure, and the double-peak temperature curve shape can be modulated by modifying the laser scanning offset and the size of the diamond powder. And it suggests that the heat of the diamond mainly comes from the transfer of the molten pool. Then, combined with the experimental phenomenon, the mechanism of diamond graphitization in the LPBF process is analyzed. It indicates that since the surface defects of the diamond inhibit the heat conduction of the diamond, the temperature accumulates on the surface, leading to the graphitization of the diamond. Finally, based on this model, the potential of Ti-coated diamonds to prevent and reduce thermal damage in the LPBF process has been extensively studied. It is found that a Ti coating with low thermal conductivity can effectively reduce diamond temperature and improve diamond graphitization resistance. This study can provide a good method and basis for the preliminary selection of LPBF process parameters and the understanding of the graphitization mechanism of diamond tools.

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Study on the additively manufactured porous metal-bonded grinding wheel designed by octahedron lattice structure

Tian

Wan

et al. 2023

Int J Adv Manuf Technol

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Formation characteristics of nickel-based diamond abrasive segment by selective laser melting

Cited by 10 publications

References 33 publications

The effect of absorption ratio on meltpool features in laser-based powder bed fusion of IN718

The effect of absorption ratio on meltpool features in laser-based powder bed fusion of IN718

Numerical Simulation of Temperature Characteristics and Graphitization Mechanism of Diamond in Laser Powder Bed Fusion

Study on the additively manufactured porous metal-bonded grinding wheel designed by octahedron lattice structure

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