Influence of Deposition Parameters on the Building rate, In-Situ Formation of Austenite and Tensile Properties of SAF 2507 SDSS Fabricated by Directed Energy Deposition

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F26316919%3A_____%2F25%3AN0000026" target="_blank" >RIV/26316919:_____/25:N0000026 - isvavai.cz</a>

Alternative codes found

RIV/60461373:22310/25:43933348

Result on the web

<a href="https://doi.org/10.1007/s12540-025-01953-4" target="_blank" >https://doi.org/10.1007/s12540-025-01953-4</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s12540-025-01953-4" target="_blank" >10.1007/s12540-025-01953-4</a>

Result language

angličtina

Original language name

Influence of Deposition Parameters on the Building rate, In-Situ Formation of Austenite and Tensile Properties of SAF 2507 SDSS Fabricated by Directed Energy Deposition

Original language description

Industry applications of duplex stainless steels require a two-phase microstructure with a nearly balanced austenite-ferrite content to achieve good mechanical properties and good corrosion resistance. The most widespread additive manufacturing method such as laser powder bed fusion provides nearly fully ferritic microstructures due to the very high cooling rate, and the post-processing heat treatment must be performed. In contrast, other additive manufacturing methods, such as directed deposition methods, reach lower cooling rates and enable to obtain an equal ferrite-austenite ratio directly in the microstructure of the as-built state. In this work, the super duplex stainless steel SAF 2507 was deposited by directed energy deposition. The process parameters, namely, the laser power, laser beam spot, and powder feed rate, were varied to investigate the impact of the energy area density on the microstructure and tensile properties. A decrease in the energy area density caused an increase in the austenite content of 48 vol% and a numerical simulation of the sample temperature distribution inside the block during deposition, explaining the relationship between the amount of in situ formed austenite and the deposition parameters, was provided. Simultaneously, the deposition rate increased by more than five times. In contrast, the samples deposited at a higher building rate are characterized by greater porosity and lower elongation values in the vertical direction. The effect of the deposition parameters on the yield strength is low.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

20301 - Mechanical engineering

Project

<a href="/en/project/EH23_021%2F0008433" target="_blank" >EH23_021/0008433: Development of special wire semiproducts for welding and 3D printing</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2025

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

METALS AND MATERIALS INTERNATIONAL

ISSN

1598-9623

e-ISSN

2005-4149

Volume of the periodical

31

Issue of the periodical within the volume

11

Country of publishing house

KR - KOREA, REPUBLIC OF

Number of pages

18

Pages from-to

3172-3189

UT code for WoS article

001493639900001

EID of the result in the Scopus database

2-s2.0-105006426174