scholarly journals Feasibility Study of Selective Laser Melting for Metal Matrix Diamond Tools

Crystals ◽  
2020 ◽  
Vol 10 (7) ◽  
pp. 596
Author(s):  
Xiaohong Fang ◽  
Zhan Yang ◽  
Songcheng Tan ◽  
Longchen Duan
Keyword(s):  
Selective Laser Melting ◽  
Metal Matrix ◽  
Thermal Damage ◽  
High Porosity ◽  
Rockwell Hardness ◽  
Laser Melting ◽  
Diamond Tools ◽  
Diamond Crystals ◽  
Hot Pressing Sintering ◽  
Damage Type

Metal matrix diamond composite samples were fabricated by selective laser melting (SLM) at different forming parameters to investigate the feasibility and new challenges when SLM is applied to diamond tools manufacturing. The surface topographies, Rockwell hardness, compactness, microstructure, and diamond thermal damage of the samples were investigated in this study. The fabricated samples had high porosity and relatively low Rockwell hardness and compactness, and some ridge-shaped bulges and textures were observed at the edges and surfaces. Microstructure analyses showed that diamond particles were homogeneously distributed and metallurgically bonded within the metal matrix. The thermal damage pits on the diamond crystals along the scanning direction were the dominant damage type for SLM, which was completely different from conventional vacuum brazing and hot-pressing sintering. Although some challenges need to be further studied, our results demonstrate that SLM has great potential to propel the development of metal matrix diamond tools.

Alumina Reinforced EP648 Metal Matrix Composite Produced by Selective Laser Melting Powder Bed Fusion Additive Technology

2021 ◽  
Vol 316 ◽  
pp. 181-186
Author(s):  
P.A. Lykov ◽  
L. V. Radionova
Keyword(s):  
Selective Laser Melting ◽  
Matrix Composite ◽  
Metal Matrix ◽  
Composite Powder ◽  
Additive Technology ◽  
Ceramic Powders ◽  
Laser Melting ◽  
Two Phase ◽  
Powder Bed ◽  
Scanning Electron

This paper is devoted to fabrication of alumina reinforced EP648 matrix composite material, using selective laser melting. of two-phase composite powder, prepared by ball milling of metal and ceramic powders. Five 10x10x5 mm bulk specimens were successfully manufactured using different process parameters. The obtained MMC specimens were characterized by scanning electron microscopy.

Properties of aluminum metal matrix composites manufactured by selective laser melting

2021 ◽  
Vol 112 (7) ◽  
pp. 552-564
Author(s):  
Christian Felber ◽  
Florian Rödl ◽  
Ferdinand Haider
Keyword(s):  
Additive Manufacturing ◽  
Aluminum Alloys ◽  
Selective Laser Melting ◽  
Metal Matrix ◽  
High Hardness ◽  
High Strength ◽  
Laser Melting ◽  
Scanning Calorimetry ◽  
Particle Reinforcement ◽  
The Matrix

Abstract The most promising metal processing additive manufacturing technique in industry is selective laser melting, but only a few alloys are commercially available, limiting the potential of this technique. In particular high strength aluminum alloys, which are of great importance in the automotive industry, are missing. An aluminum 2024 alloy, reinforced by Ti-6Al-4V and B4C particles, could be used as a high strength alternative for aluminum alloys. Heat treating can be used to improve the mechanical properties of the metal matrix composite. Dynamic scanning calorimetry shows the formation of Al2Cu precipitates in the matrix instead of the expected Al2CuMg phases due to the loss of magnesium during printing, and precipitation processes are accelerated due to particle reinforcement and additive manufacturing. Strong reactions between aluminum and Ti-6Al-4V are observed in the microstructure, while B4C shows no reaction with the matrix or the titanium. The material shows high hardness, high stiffness, and low ductility through precipitation and particle reinforcement.

scholarly journals Selective Laser Melting process optimization of Ti–Mo–TiC metal matrix composites

CIRP Annals ◽  
2019 ◽  
Vol 68 (1) ◽  
pp. 221-224 ◽  
Author(s):  
Bey Vrancken ◽  
Sasan Dadbakhsh ◽  
Raya Mertens ◽  
Kim Vanmeensel ◽  
Jef Vleugels ◽  
...  
Keyword(s):  
Metal Matrix Composites ◽  
Selective Laser Melting ◽  
Process Optimization ◽  
Metal Matrix ◽  
Melting Process ◽  
Matrix Composites ◽  
Laser Melting ◽  
Selective Laser Melting Process
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