The microstructure and wear behavior of S390 high-speed steel (HSS) reinforced with different volume fractions MC-type carbides produced via spark plasma sintering were investigated using scanning electron microscopy (SEM) transmission (TEM) in this study. SEM TEM results show that V-W-rich are formed around the added carbides, these have a similar composition to M(C, N) precipitated at high te...

In this paper, the metal matrix composites containing 22 wt % Cr, 2.5 wt % C and 2 to 16  volume percent TiC were processed by solidifying Fe-Cr-Ti-C in which precipitation of titaniumcarbide and chromium carbide occurred. The microstructure and abrasion resistance of in-situ synthesized composites were compared with the unreinforced high chromium white cast iron (HCWCI) containing 22 w. t. % C...

in this study, ultrafine grained 2024 al alloy based b4c particles reinforced composite was produced by mechanical milling and hot extrusion. mechanical milling was used to synthesize the nanostructured al2024 in attrition mill under argon atmosphere up to 50h. a similar process was used to produce al2024-5%wt. b4c composite powder. to produce trimodal composites, milled powders were combined w...

The authors describe a technique for melt infiltration casting of composites with a metallic-glass matrix. We made rods 5 cm in length and 7 mm in diameter. The samples were reinforced by continuous metal wires, tungsten powder, or silicon carbide particulate preforms. The most easily processed composites were those reinforced with tungsten and carbon steel continuous wire reinforcement. The Zr...

Based on the recent analysis of various databases, cold spray (CS), newest method among thermal spraying technologies, has received unabated attention hundreds researchers continuously since its invention in 1980s. The significance CS lies low process temperature, which usually ensures compressive residual stresses and allows for formation coatings a thermally sensitive substrate. This paper co...

surements can be performed at much reduced exposure times THE load-bearing capacity of a metal matrix composite and in small diffracting volumes, thus allowing for investi(MMC) is dictated by the load transfer occurring from the gating the time dependenceof lattice strains and for mapping compliant, soft matrix to the stiff, hard reinforcements. such strains with a lateral resolution of a fract...

• This article for the first time provides a critical review of AMCs developed by cold spraying. A summary composite powder preparation, CS deposition behavior, microstructure, and properties has been made. It reports relevant research progress on post-treatments additive manufacturing applications. The challenges perspectives fabrication advanced are addressed. Cold spraying (CS), or gas dynam...

Metal matrix composites have been increasingly used as materials for components in automotive and aerospace industries because of their improved properties compared with non-reinforced alloys. During machining the selection of appropriate machining parameters to produce job for desired surface roughness is of great concern considering the economy of manufacturing process. In this study, a surfa...

The potential of random metal-dielectric nanocomposites as constituent elements of metamaterial structures is explored. Classical effective medium theories indicate that these composites can provide a tunable negative dielectric function with small absorption losses. However, the tuning potential of real random composites is significantly lower than the one predicted by classical theories, due ...