| Title: | Heat treatment optimisation of 18 % Ni maraging steel produced by DED-ARC for enhancing mechanical properties |
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| Authors: | ID Lindič, Maja (Author)
ID Klobčar, Damjan (Author)
ID Nagode, Aleš (Author)
ID Mole, Nikolaj (Author)
ID Žužek, Borut (Author)
ID Vuherer, Tomaž (Author) |
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| Files: |  PDF - Presentation file, download (22,02 MB)
MD5: BFD3B321950A21850974C4280D182A48
 URL - Source URL, visit https://www.sciencedirect.com/science/article/pii/S2666330925000330
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| Language: | English |
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| Typology: | 1.01 - Original Scientific Article |
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| Organization: |  IMT - Institute of Metals and Technology
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| Abstract: | This article deals with the Directed Energy Deposition using Wire and Arc (DED-ARC) for maraging steel cladding. A technology for cladding using Gas Metal Arc Welding (GMAW) has been developed that enables the perfect deposition of maraging steel. The material characterisation was carried out in different material states: in the as-built, solution annealed and aged. The research included visual examinations, optical microscopy, Scanning Electron Microscopy / Energy-dispersive X-ray spectroscopy (SEM/EDS), fractography, hardness testing, tensile testing and impact toughness testing. The as-deposited state exhibited a microstructure with very long crystal grains and microsegregations orientated the direction of the heat sink, consisting of lath martensite. Consequently, a subsequent heat treatment is absolutely necessary in order to obtain a uniform fine-grained microstructure. Two different solution annealing processes were analysed, which allowed us to select the most suitable process for the first step of heat treatment followed by aging. A response surface methodology was used to optimise the aging conditions. The results show that additively manufactured maraging steel reaches a tensile strength of 1947 MPa, a hardness of 657 HV5 and a Charpy impact toughness of 11 J at peak aging condition, which is comparable to conventionally manufactured maraging steel. |
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| Keywords: | maraging steel, heat treatment, material properties optimisation, DED-ARC, GMAW, RSM |
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| Publication status: | Published |
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| Publication version: | Version of Record |
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| Publication date: | 01.06.2025 |
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| Publisher: | Elsevier |
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| Year of publishing: | 2025 |
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| Number of pages: | str. 1-12 |
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| Numbering: | Vol. 11, 100312 |
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| Source: | Nizozemska |
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| PID: | 20.500.12556/DiRROS-24583  |
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| UDC: | 621.791.75:669.14 |
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| ISSN on article: | 2666-3309 |
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| DOI: | 10.1016/j.jajp.2025.100312 |
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| COBISS.SI-ID: | 237223939 |
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| Copyright: | © 2025 The Author(s). Published by Elsevier B.V. |
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| Note: | Nasl. z nasl. zaslona;
Opis vira z dne 26. 5. 2025;
Soavtorji: Damjan Klobčar, Aleš Nagode, Nikolaj Mole, Borut Žužek, Tomaž Vuherer;
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| Publication date in DiRROS: | 08.12.2025 |
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| Views: | 367 |
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| Downloads: | 102 |
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