Laser Powder Bed Fusion (L-PBF) is an additive manufacturing process that allows to build parts by solidifying powder bed, layer layer, with a laser. This approach offers the possibility complex geometries. However, due succession of layers, use as raw material and melt pool dynamic, surface roughness generated through this limitation for some applications. Several works have been conducted imp...

In this study, thermal stress analysis on discs consisting of two different materials was analyzed analytically. Disc were selected SiC/6061 Al Alloy composite and Al-7075 respectively. Assuming that the elasticity module does not change with temperature, performed under constant temperature distributions in area from inner surface disc to outer surface. Thermal distribution. A computer program...

The high entropy alloy (HEA) filler used during the fabrication method determines reliability of HEAs for steel-aluminum dissimilar configuration. have a direct impact on formation intermetallic compounds (IMC) formed by interaction iron (Fe) and aluminum (Al), influence size joint’s zone. A novel welding process Fe-Al joints was developed to prevent development brittle iron-aluminum interface....

Aluminum-based metal matrix composite (MMC) materials are used in the design of ground transportation vehicles and aircraft. Compared with conventional, unreinforced alloys, composite materials usually exhibit higher strength, both at ambient and elevated temperatures, as well as good fatigue strength and wear resistance. MMCs could be produced by variety of methods such as Stir cast, Liquid In...

Caustic stress corrosion cracking has only been superficially examined in aluminum alloys. In caustic (basic) environments, the inherent, protective oxide layer becomes soluble on aluminum and allows for further degradation. The purpose of this study is to observe the effect of a strong base solution (sodium, hydroxide, sodium hypochlorite, sodium silicate, pH ~12) on the strength and stress-st...

This paper presents deformation and cracking phenomena associated with the cold spray of nanoscale surface oxide layers 6061 Al alloy powders. The structure top film was revealed via Focused Ion Beam (FIB), Transmission Electron Microscopy (TEM), X-ray Photoelectron Spectroscopy (XPS). observations show layer characteristics most likely matches crystalline γ-Al 2 O 3 . Phenomena contacts, conta...

Sandwich structures used to lightweight telescope mirrors result in subsurface pore or cell-induced surface deformation (called quilting), the unsupported sub-surface regions, during diamond turning of optical surface. An alternative sandwich structure is metal foams made by melt route which have a monolithic porous-nonporous interface naturally formed gravitationally induced drainage effect. T...