Adjusted Process Conditions in Laser Powder Bed Fusion to Obtain a Single-Crystal-Like Microstructure in IN718

Alexander F. Frey; Christoph Seyfert; Peter J. Holfelder

doi:10.4028/www.scientific.net/AMR.1161.39

Paper Titles

Preface

Printing and Laser Curing of Ag and Cu Paste - Prospects and Challenges in Additive Manufacturing
p.3

Comparison of the EHLA and LPBF Process in Context of New Alloy Design Methods for LPBF
p.13

Efficient Qualification Strategy of New Steel Alloys for Laser Powder Bed Fusion
p.27

Adjusted Process Conditions in Laser Powder Bed Fusion to Obtain a Single-Crystal-Like Microstructure in IN718
p.39

Influence of Intrinsic Heat Treatment (IHT) on Precipitation Kinetics during Laser Beam Powder Bed Fusion of Al-Mg-Sc Alloy
p.47

Cellular Automata Analysis of Effects of Substrate Conditions on Microstructure and Texture Evolution during Selected Laser Melting
p.57

DoE Applied to Thermal Analysis and Simulation of Geometrical Stability of a Wind Turbine Blade Made by Selective Laser Melting
p.65

Simulation Aided Process Development with Multi-Spot Strategies in Laser Powder-Bed Fusion
p.75

HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 1161Adjusted Process Conditions in Laser Powder Bed...

Adjusted Process Conditions in Laser Powder Bed Fusion to Obtain a Single-Crystal-Like Microstructure in IN718

Abstract:

The nickel base alloy IN718 was manufactured by Laser Powder Bed Fusion (LPBF) using a laser spot size of 1024 μm and a laser power of 1.3 kW at a layer thickness of 160μm. The resulting porosity, microstructure and mechanical properties are presented. Very coarse and in build direction elongated grains are stacked to form a polycrystalline material with sharp single-crystal-like texture. The appearance of ∑5 grain boundaries between coincidence side lattices is recognized. Tensile testing shows highly anisotropic mechanical properties according to the revealed texture. Increasing the hatch distance reduces the severity of the texture.

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Periodical:

Advanced Materials Research (Volume 1161)

Pages:

39-46

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.1161.39

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Online since:

March 2021

Authors:

Alexander F. Frey*, Christoph Seyfert, Peter J. Holfelder

Keywords:

IN718, Laser Powder Bed Fusion (LPBF), Single Crystal, Texture

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