MICROSTRUCTURAL STUDIES ON LASER WELDING OF INCONEL 718 TO 2304 DUPLEX STAINLESS STEEL WITH A FOCUS OPTIMAZING PROCESS PARAMETERS AND ACHIEVING THE MAXIMUM FRACTURE STRENGTH

This paper presents a coupled approach able to describe γ″ precipitation evolution and associated yield strength after various heat treatments in Inconel 718 alloy. The state is modeled via the implementation of classical nucleation growth theories for plate-shaped particles. model validated through small-angle neutron scattering transmission electron microscopy experiments. size distribution s...

Abstract The combination of laser powder bed fusion (LPBF), known for its geometrical freedom and accuracy, the nozzle-based metal deposition process (LMD), high build-up rates, has great potential to reduce additive manufacturing times large metallic parts. For industrial application LPBF-LMD hybrid chain, it is necessary investigate influence LMD on LPBF substrate. In addition, build plate ma...

The paper details the effects of depth of cut and vibration amplitude when ultrasonic assisted (US) creep feed grinding Inconel 718 with an open structured alumina based wheel. The workpiece was actuated at a constant frequency (~20.5kHz) via a block sonotrode attached to a 1kW piezoelectric transducer-generator system. A full factorial experimental array comprising 12 tests was conducted invol...

This study presents the dynamic and buckling analysis of laminated composite thin arch plate frame structures employing Classical Plate Theory with Finite Element Analysis. For this purpose, effects radius curvature, aspect ratio, stacking order such on first ten natural frequencies, mode shapes, critical load, unstable regions are investigated. Besides, two-bay curved structure is In to perfor...

Nickel-based alloys are widely used in the aerospace industry, nuclear reactors and automotive industry. These exhibit excellent physical chemical properties at high temperatures. However, nickel-based difficult to machine materials with hardness low thermal conductivity, which results cutting forces during machining. Additionally, increasing demand for meso-scale components industry has opened...

This paper discusses the use of Box Behnken design approach to plan the experiments for turning Inconel 718 alloy with an overall objective of optimizing the process to yield higher metal removal, better surface quality and lower cutting forces. Response Surface methodology (RSM) has been adopted to express the output parameters (responses) that are decided by the input process parameters. RSM ...