Synchrotron diffraction characterization of dislocation density in additively manufactured IN 718 superalloy

K Prasad, M Obana, A Ito, S Torizuka - Materials Characterization, 2021 - Elsevier
In the present study, 3-dimensional (3D) parts of Inconel 718 (IN 718) have been fabricated
using laser powder bed fusion (L-PBF) processing. Synchrotron diffraction experiments have …

The possible role of nano sized precipitates on the mechanical properties of additively manufactured IN 718 superalloy

M Obana, K Prasad, A Ito, S Torizuka - Materials Science and Engineering …, 2021 - Elsevier
In the present study, three dimensional parts of Inconel 718®(IN 718) superalloy were
fabricated using laser powder bed fusion (L-PBF) additive manufacturing (AM). The …

[HTML][HTML] Influence of laser powder bed fusion scanning pattern on residual stress and microstructure of alloy 718

J Čapek, E Polatidis, N Casati, R Pederson, C Lyphout… - Materials & …, 2022 - Elsevier
A comprehensive investigation is undertaken on the effect of laser scanning pattern on the
microstructure of cylindrical samples made of Alloy 718 processed by Laser Powder Bed …

On the measurement of dislocations and dislocation substructures using EBSD and HRSD techniques

O Muransky, L Balogh, M Tran, CJ Hamelin, JS Park… - Acta Materialia, 2019 - Elsevier
The accumulation of the dislocations and development of dislocation structures in plastically
deformed Ni201 is examined using dedicated analyses of Electron Back-Scatter Diffraction …

Determination of diffraction and single-crystal elastic constants of laser powder bed fused Inconel 718

J Schröder, A Heldmann, M Hofmann, A Evans… - Materials Letters, 2023 - Elsevier
High energy X-ray synchrotron diffraction is used to investigate the elastic anisotropy of the
nickel-based superalloy IN718 produced by laser powder bed fusion (PBF-LB). This material …

Three-dimensional maps of geometrically necessary dislocation densities in additively manufactured Ni-based superalloy IN718

WA Witzen, AT Polonsky, TM Pollock… - International Journal of …, 2020 - Elsevier
In this work, we present a method to characterize the subgranular three-dimensional
distribution of geometrically necessary dislocations (GNDs) and apply it to an additively …

On the influence of heat treatment on microstructure and mechanical behavior of laser powder bed fused Inconel 718

J Schröder, T Mishurova, T Fritsch… - Materials Science and …, 2021 - Elsevier
A range of heat treatments have been developed for wrought Inconel 718 to obtain desired
properties. For additively manufactured Inconel 718, the recently developed standard ASTM …

Experimental investigation of laser scan strategy on the microstructure and properties of Inconel 718 parts fabricated by laser powder bed fusion

BB Ravichander, K Mamidi, V Rajendran… - Materials …, 2022 - Elsevier
Abstract Inconel 718 (IN718) is a nickel-based superalloy which exhibits excellent tensile
and impact resistant properties along with good corrosion resistance at high temperatures …

In situ synchrotron diffraction study of a crack-free additively manufactured Ni base superalloy

K Prasad, Y Horita, A Ito, S Torizuka - Scripta Materialia, 2021 - Elsevier
The tensile deformation behaviour of a crack-free additively manufactured (AM) Ni base
superalloy and its wrought (W) counterpart has been investigated by in-situ synchrotron X …

A comparison of dislocation cellular patterns generated in Inconel 718 alloy and pure Ni fabricated by laser powder bed fusion

M He, Z Xiang, J Yi, Y Ni, S Wang - Vacuum, 2022 - Elsevier
The dislocation cellular pattern (DCP) plays an important role on the mechanical property of
metals fabricated by laser powder bed fusion technique. Understanding the origin and …