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

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Published Date

2020

Language

English

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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.

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