Selective laser melting of Inconel 718 under high laser power

Journal article (2020)

Authors

Evgenii Borisov Peter the Great Saint-Petersburg Polytechnic University
V. Popovich Team Vera Popovich - Mechanical, Maritime and Materials Engineering
Anatoly Popovich Peter the Great Saint-Petersburg Polytechnic University
V. Sh Sufiiarov Peter the Great Saint-Petersburg Polytechnic University
Jia-Ning Zhu Team Vera Popovich - Mechanical, Maritime and Materials Engineering
Kirill Starikov Peter the Great Saint-Petersburg Polytechnic University
Research Group
Team Vera Popovich (Mechanical, Maritime and Materials Engineering) (TU Delft)
Selective laser melting Additive manufacturing Texture Grain structure Nickel alloy
More Info
expand_more

Published Date

2020

Language

English

Reuse Rights

Other than for strictly personal use, it is not permitted to download, forward or distribute the text or part of it, without the consent of the author(s) and/or copyright holder(s), unless the work is under an open content license such as Creative Commons.

Faculty

Mechanical, Maritime and Materials Engineering

Department

Materials Science and Engineering

Research Group

Team Vera Popovich

Abstract

Selective laser melting (SLM) process has been lately extensively applied in manufacturing of Nickel-based super alloys, which compared to conventional manufacturing routes offers increased design flexibility and simplification of the manufacturing process. However, in order to make SLM process even more beneficial, its process time has to be reduced. One of the ways to tackle this problem is by tailoring process parameters through application of high laser power and base plate pre-heating. In this paper, a comparative study of optimum SLM fabrication conditions of Inconel 718 superalloy under high laser power and with and without plate pre-heating was conducted. Furthermore, the effect of layer thickness on melt pool characteristics, porosity and hardness were investigated to determine how laser power and pre-heating affect microstructure development.