High Strength X3NiCoMoTi 18-9-5 Maraging Steel Prepared by Selective Laser Melting from Atomized Powder

Maraging steels are generally characterized by excellent mechanical properties, which make them ideal for various industrial applications. The application field can be further extended by using selective laser melting (SLM) for additive manufacturing of shape complicated products. However, the final...

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Bibliographic Details
Published in:Materials 2019-12, Vol.12 (24), p.4174
Main Authors: Strakosova, Angelina, Kubásek, Jiří, Michalcová, Alena, Průša, Filip, Vojtěch, Dalibor, Dvorský, Drahomír
Format: Article
Language:English
Subjects:
3-D printers
Aging
Alloys
Annealing
Atomizing
Cooling
Heat treating
Heat treatment
High strength
Industrial applications
Laser beam melting
Lasers
Maraging steels
Mechanical properties
Microstructure
Particle size
Printed materials
Steel
Tensile strength
Three dimensional printing
Yield strength
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Summary:Maraging steels are generally characterized by excellent mechanical properties, which make them ideal for various industrial applications. The application field can be further extended by using selective laser melting (SLM) for additive manufacturing of shape complicated products. However, the final mechanical properties are strongly related to the microstructure conditions. The present work studies the effect of heat treatment on the microstructure and mechanical properties of 3D printed samples prepared from powder of high-strength X3NiCoMoTi 18-9-5 maraging steel. It was found that the as-printed material had quite low mechanical properties. After sufficient heat treatment, the hardness of the material increased from 350 to 620 HV0.1 and the tensile yield strength increased from 1000 MPa up to 2000 MPa. In addition, 3% ductility was maintained. This behavior was primarily affected by strong precipitation during processing.
ISSN:1996-1944
1996-1944
DOI:10.3390/ma12244174