Magnetic properties of as-built and heat treated M789 and M300 maraging steels produced via laser powder bed fusion

This paper reports on the magnetic characteristics of maraging steels additively produced through laser powder bed fusion with a focus on two specific grades, namely M789 and M300. Magnetic material properties, including magnetization curve, magnetic hysteresis, and loss, are systematically examined...

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Bibliographic Details
Published in:Next materials 2025-01, Vol.6, p.100287, Article 100287
Main Authors: Mateev, Valentin, Sinico, Mirko, Gorji Ghalamestani, Setareh, Van Hooreweder, Brecht
Format: Article
Language:English
Subjects:
Additive manufacturing
High-speed rotors
Laser powder bed fusion
M789
Magnetic properties
Maraging steel
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Summary:This paper reports on the magnetic characteristics of maraging steels additively produced through laser powder bed fusion with a focus on two specific grades, namely M789 and M300. Magnetic material properties, including magnetization curve, magnetic hysteresis, and loss, are systematically examined for both grades. The effect of a solution annealing plus aging heat treatment is explored to determine how these properties differ between the as-built and heat-treated conditions. The findings illustrate a substantial improvement in magnetic properties post-heat treatment. Specifically, an increase in maximum magnetic permeability by 73 % for M789 and 56 % for M300 is measured. Additionally, reductions in hysteresis loss were observed, with a decrease of 29 % for M300 and 35 % for M789. The knowledge of these properties will be crucial for applying additive manufacturing on high-speed rotors, magnetic gears or magnetic bearings components where maraging steels are already, sometimes, utilized.
ISSN:2949-8228
2949-8228
DOI:10.1016/j.nxmate.2024.100287