Additive manufacture of TiB2/Ti-6Al-4V metal matrix composite by selective laser melting

2019 ◽  
Vol 8 (3) ◽  
pp. 259 ◽  
Author(s):  
P.K. Farayibi ◽  
T.E. Abioye
Keyword(s):  
Metal Matrix Composite ◽  
Selective Laser Melting ◽  
Matrix Composite ◽  
Metal Matrix ◽  
Additive Manufacture ◽  
Laser Melting

scholarly journals The Effect of using Repetitively Pulsed Laser Radiation in Selective Laser Melting when Creating a Metal Matrix Composite Ti-6Al-4V – B4C.

2021 ◽  
Author(s):  
Alexander Golyshev ◽  
Alexander Malikov ◽  
Anatoliy Orishich ◽  
Mikhail Gulov ◽  
Alexei Ancharov
Keyword(s):  
Mechanical Properties ◽  
Laser Radiation ◽  
Metal Matrix Composite ◽  
Selective Laser Melting ◽  
Matrix Composite ◽  
Metal Matrix ◽  
Pulsed Laser ◽  
Laser Melting ◽  
Properties Of Coatings ◽  
Pulsed Laser Radiation

Abstract A metal-matrix composite based on Ti-6Al-4V – B4C with TiB, TiB2 and TiC inclusions was successfully obtained as a result of in-situ synthesis using repetitively pulsed laser radiation. For the first time, the phase composition of the obtained metal-matrix composite was studied using synchrotron radiation. A comparison of the effect of using continuous and pulsed-periodic radiation in selective laser melting on the microstructure and mechanical properties of coatings was made. The use of repetitively pulsed radiation made it possible to form more uniform structures and to improve the mechanical properties of metal-matrix coatings in comparison with the continuous mode of exposure. It has been established that the use of repetitively pulsed radiation and the formation of TiB2, TiB, TiC phases made it possible to increase the wear resistance of the formed composite by a factor of 6 in comparison with the Ti-6Al-4V metal coating.

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.

In-Situ Synthesis of Metal Matrix Composite Coating with Laser Melting-Solidifying Processes

2006 ◽  
Vol 313 ◽  
pp. 139-144 ◽  
Author(s):  
Lin Geng ◽  
Qing Wu Meng ◽  
Yan Bin Chen
Keyword(s):  
Metal Matrix Composite ◽  
Composite Coating ◽  
Matrix Composite ◽  
Metal Matrix ◽  
High Energy ◽  
Hexagonal Prism ◽  
Laser Melting ◽  
Dendrite Morphology ◽  
Melting Pool

In order to improve wear resistance of titanium alloy, with pre-placed B4C and NiCrBSi powders on Ti-6Al-4V substrate, a process of laser melting-solidifying metal matrix composite coating was studied. The coating was examined using XRD, SEM and EDS. A good metal matrix composite coating was obtained in a proper laser process. There is a metallurgical interface bonding between the coating and the substrate. During laser melting-solidifying process, high energy of laser melted the pre-placed powders and a part of Ti-6Al-4V substrate, which made Ti extend into a melting pool. A reaction between Ti and B4C took place in the melting pool, which in-situ synthesized TiB2 and TiC reinforcements in the coating. The composite coating mainly consists of γ-Ni matrix, TiB2, TiC and CrB reinforcements. Microstructure of the reinforcements obtained using the laser melting-solidifying is not as same as that of reinforcements obtained using general producing methods. Due to high cooling rate of the melting pool, TiC nucleated primarily and grew up in dendrite morphology from undercooled liquid. Encircling TiC, TiB2 precipitated later and grew up in hexagonal prism morphology. TiC and TiB2 formed an inlaid microstructure.

TEM examination of 2014-SiC metal matrix composite

1988 ◽  
Vol 46 ◽  
pp. 726-727
Author(s):  
M. G. Burke ◽  
M. N. Gungor ◽  
P. K. Liaw
Keyword(s):  
Metal Matrix Composite ◽  
Metal Matrix Composites ◽  
Matrix Composite ◽  
Metal Matrix ◽  
Tensile Deformation ◽  
Microstructural Characterization ◽  
Thin Foil ◽  
Matrix Alloy ◽  
Matrix Composites ◽  
Ion Milling

Aluminum-based metal matrix composites offer unique combinations of high specific strength and high stiffness. The improvement in strength and stiffness is related to the particulate reinforcement and the particular matrix alloy chosen. In this way, the metal matrix composite can be tailored for specific materials applications. The microstructural characterization of metal matrix composites is thus important in the development of these materials. In this study, the structure of a p/m 2014-SiC particulate metal matrix composite has been examined after extrusion and tensile deformation.Thin-foil specimens of the 2014-20 vol.% SiCp metal matrix composite were prepared by dimpling to approximately 35 μm prior to ion-milling using a Gatan Dual Ion Mill equipped with a cold stage. These samples were then examined in a Philips 400T TEM/STEM operated at 120 kV. Two material conditions were evaluated: after extrusion (80:1); and after tensile deformation at 250°C.

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