Effect of the parametric optimization and heat-treatment on the 18Ni-300 maraging steel microstructural properties manufactured by directed energy deposition

2021 ◽  
Author(s):  
Christian Félix-Martínez ◽  
Juansethi Ibarra-Medina ◽  
David Andrés Fernández-Benavides ◽  
Luis Alberto Cáceres-Díaz ◽  
Juan Manuel Alvarado-Orozco
Keyword(s):  
Heat Treatment ◽  
Maraging Steel ◽  
Energy Deposition ◽  
Parametric Optimization ◽  
Microstructural Properties ◽  
Directed Energy Deposition ◽  
Directed Energy

Towards controlling intrinsic heat treatment of maraging steel during laser directed energy deposition

2021 ◽  
Vol 201 ◽  
pp. 113973
Author(s):  
Sasan Amirabdollahian ◽  
Faraz Deirmina ◽  
Luke Harris ◽  
Raveendra Siriki ◽  
Massimo Pellizzari ◽  
...  
Keyword(s):  
Heat Treatment ◽  
Maraging Steel ◽  
Energy Deposition ◽  
Directed Energy Deposition ◽  
Directed Energy

scholarly journals Mechanical Properties of Tool Steels with High Wear Resistance via Directed Energy Deposition

Metals ◽  
2019 ◽  
Vol 9 (3) ◽  
pp. 282 ◽  
Author(s):  
Gyeong Yun Baek ◽  
Gwang Yong Shin ◽  
Ki Yong Lee ◽  
Do Sik Shim
Keyword(s):  
Mechanical Properties ◽  
Heat Treatment ◽  
Wear Resistance ◽  
Energy Deposition ◽  
High Wear Resistance ◽  
Matrix Microstructure ◽  
Microstructure Observation ◽  
Directed Energy Deposition ◽  
Directed Energy ◽  
Post Deposition

This study focused on the mechanical and metallurgical characteristics of high-wear-resistance steel (HWS) deposited using directed energy deposition (DED) for metal substrate hardfacing or repairing. As post-deposition heat treatment changes the metallurgical characteristics of deposits, the effect of post-deposition heat treatment on the mechanical properties was investigated via microstructure observation and by conducting hardness, wear, and impact tests. The obtained micro-images showed that the deposited HWS layers exhibit cellular and columnar dendrites, and the microstructure of heat-treated HWS (HT-HWS) transformed its phase during quenching and tempering. The hardness and wear resistance of the HT-HWS deposits were higher than those of the HWS deposited specimen, whereas the latter exhibited a higher fracture toughness. The matrix microstructure and carbide characteristics, which are characterized by the chemical composition of the materials, significantly influenced the mechanical properties.

Heat Treatments of P295GH Steel Made by Directed Energy Deposition: Metallography and Hardness

2021 ◽  
Vol 1046 ◽  
pp. 65-70
Author(s):  
Solène Lhabitant ◽  
Alain Toufine ◽  
Anis Hor
Keyword(s):  
Heat Treatment ◽  
Additive Manufacturing ◽  
Metal Powder ◽  
Manufacturing Process ◽  
Isotropic Material ◽  
Energy Deposition ◽  
Xrd Analysis ◽  
Directed Energy Deposition ◽  
Before And After ◽  
Directed Energy

Directed energy deposition (DED) is an Additive Manufacturing process deposing fused metal powder on a preexisting substrate. This document shows the influence of heat treatment on P295GH deposit made by DED, for hybridization process. The heat treatment must reduce the macroscopic differences between the rolled substrate and the deposited DED material. The experimental plan has been defined around AC3 temperature, according to P295GH existing literature. XRD analysis, hardness measurements and metallographic inspections have been performed on samples before and after heat treatment. XRD analysis and hardness measurements have shown an isotropic material. The as-built microstructure is ferritic and acicular, but coarsens after the heat treatment. The study promotes a heat treatment at 800°C during 3 hours to obtain the best compromise between properties, impact on the substrate and differences with the rolled substrate.

scholarly journals Distortion-based validation of the heat treatment simulation of Directed Energy Deposition additive manufactured parts

Procedia CIRP ◽  
2020 ◽  
Vol 94 ◽  
pp. 362-366
Author(s):  
Bassel El-Sari ◽  
Max Biegler ◽  
Benjamin Graf ◽  
Michael Rethmeier
Keyword(s):  
Heat Treatment ◽  
Energy Deposition ◽  
Directed Energy Deposition ◽  
Directed Energy
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