By recording and analyzing complete wave profiles using the VISAR laser interferometer, measurements of Hugoniot elastic limit critical fracture stresses were carried out under spalling conditions heat-resistant Inconel 718 alloy, additively manufactured by direct deposition, at shockwave loading up to ~6.5 GPa a light-gas gun. For comparison, similar experiments performed with alloy made tradi...

The properties and oxidation wear patterns in the composite nanostructured coating of Zr-ZrN-(Zr,Mo,Al)N were studied during turning Inconel 718 alloy at cutting speeds vc = 125 200 m/min. hardness coating, its elastic modulus, critical fracture load scratch testing determined. study focused on tribological temperatures 400–900 °C paired with an insert made 718, which exhibited a certain advant...

In this study, the effect of a high-speed AP 7.62 bullet on Ti6Al4V, AISI 4340, Inconel-718, AlSi10Mg and Al 6061 - T6 materials at different impact angles were investigated by using finite element package software LS-DYNA 971. 4340 was taken as material 850 m/s speed for ballistic investigation. Angle obliquity against plates has been in range 0-80º. Simulations carried out 5 degrees increment...

As a prospective candidate material for surface coating and repair applications, nickel-based superalloy Inconel 718 (IN718) was deposited on American Iron and Steel Institute (AISI) 4140 alloy steel substrate by laser engineered net shaping (LENS) to investigate the compatibility between two dissimilar materials with a focus on interface bonding and fracture behavior of the hybrid specimens. T...

A transient three-dimensional powder-scale model was established for understanding the flow field and mass transfer within molten pool during selective laser melting (SLM) of Inconel 718 alloy by considering some important physical phenomena, such as, a transition from powder to solid, nonlinearities produced temperature-dependent materials’ properties, fluid in calculation. The influence power...

Powder flowability affects dynamic powder behavior during additive manufacturing and varies depending on particle size distribution, morphology, surface features. In this study, Inconel 718 alloy powders were prepared by gas atomization (GA), plasma (PA), rotating electrode process (PREP). The was experimentally evaluated the avalanche angle. With help of numerical simulations, individual effec...

This paper presents a low-profile bidirectional folding actuator based on annealed shape memory alloy sheets applicable for mesoand microscale systems. Despite the advantages of shape memory alloys—high strain, silent operation, and mechanical simplicity—their application is often limited to unidirectional operation. We present a bidirectional folding actuator that produces two opposing 180 mot...

A program has been conducted on the effects of Mg in cast alloy 718. The results show that small amounts of Mg improves impact toughness and decreases Nb segregation by decreasing secondary dendrite arm spacing which results in less and smaller interdendritic Laves and MC eutectics. Small amounts of Mg produce a more spheroidal as well as a more dispersive MC phase. Impact toughness was found t...