0605587 - FZÚ 2026 RIV CH eng J - Článek v odborném periodiku
Dvorský, Drahomír - Nečas, D. - de Prado, Esther - Duchoň, Jan - Svora, Petr - Ekrt, Ondřej - Strakosova, Angelina - Kubásek, J. - Vojtěch, D.
Innovative powder pre-treatment strategies for enhancing maraging steel performance.
Materials. Roč. 18, č. 2 (2025), č. článku 437. ISSN 1996-1944. E-ISSN 1996-1944
Grant CEP: GA MŠMT(CZ) EH22_008/0004591; GA MŠMT LM2023051
Institucionální podpora: RVO:68378271
Klíčová slova: mechanical-properties * powder metallurgy * heat treatment * mechanical properties * SPS
Obor OECD: Condensed matter physics (including formerly solid state physics, supercond.)
Impakt faktor: 3.1, rok: 2023 ; AIS: 0.508, rok: 2023
Způsob publikování: Open access
DOI: https://doi.org/10.3390/ma18020437

Maraging steel is a high-performance material valued for its exceptional properties, making it ideal for demanding applications such as aerospace, tooling, and automotive industries, where high strength, toughness, and precision are required. These steels can be prepared by powder metallurgy techniques, which offer new processing possibilities. This paper introduces novel thermal powder pre-treatment and its impact on the final mechanical properties. Solid solution pre-treatment results in a modest improvement in strength (from 972 MPa to 1000 MPa), while the use of pre-aged powder achieves the highest strength (1316 MPa) and lowest ductility (2.6%). A self-composite material is created by mixing pre-treated powders with the same chemical composition but different properties. Such material was characterized by intermediate strength (1174 MPa) and ductility (3.1%). Although challenges such a porosity and oxidation were present, this approach allows for tuning of mechanical properties by mixing pre-treated powders, offering significant potential for advanced engineering applications.
Trvalý link: https://hdl.handle.net/11104/0364762