Effective absorptivity of diamond-reinforced metal matrix composites for powder bed fusion using a laser beam

Schnell, Norman; Wegner, Jan; Elspaß, Arno; Kleszczynski, Stefan

doi:10.1016/j.addlet.2023.100138

Cited by 4 publications

(2 citation statements)

References 26 publications

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“…Furthermore, leveraging this model, the influence of various parameters, specifically the laser scanning path's relativ with respect to the diamond, diamond diameter, and the utilization of Ti-coa particles was explored. From our investigations, several key findings have em (1) The simulation results suggest a double-peak structure in the diamo…”

Section: Discussionmentioning

confidence: 64%

“…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%

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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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Section: Discussionmentioning

confidence: 64%

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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Wear performance of boron and carbon alloyed iron aluminide laser claddings

Rojacz,

Pichelbauer,

Varga

et al. 2025

Surface and Coatings Technology

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Influence of tungsten carbide-cobalt reinforcement on flexural behavior of iron-based composite developed through microwave

Pal

Gupta

Singh

2023

Proceedings of the Institution of Mechanical Engineers, Part C:

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The flexural behavior of iron-based composite castings has been analyzed under three-point loading conditions. The metal matrix composite casting of five varying compositions of powders by weight, that is, SS316, SS316+15EWAC, SS316+15EWAC+5WC−12Co, SS316+15EWAC+10WC−12Co, and SS316+15EWAC+15WC−12Co has been cast in a domestic microwave oven of maximum power and frequency of 0.9 kW and 2.45 × 103 MHz respectively. The casting of size 30 × 6 mm2 is prepared. The prepared sample’s mechanical properties, such as ultimate peak load, flexural strength, strain at peak load, strain at break and flexural modulus, are tested on Dak System UTM having load cell 10 kN as per ASTM 1161-18 standard. The flexural strength and peak load for SS316+15EWAC+10WC−12Co, strain at peak load for SS316+15EWAC+5WC−12Co, and flexural modulus and microhardness for SS316+15EWAC+15WC−12Co were found maximum value. The maximum microhardness value is obtained in the carbide phase. The microstructure of the cast samples shows equiaxed grain growth with identical melting of the matrix. The XRD pattern of the samples confirmed the presence of various intermetallic and carbide phases.

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Effective absorptivity of diamond-reinforced metal matrix composites for powder bed fusion using a laser beam

Cited by 4 publications

References 26 publications

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

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

Wear performance of boron and carbon alloyed iron aluminide laser claddings

Influence of tungsten carbide-cobalt reinforcement on flexural behavior of iron-based composite developed through microwave

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