Additive manufacturing of strong and ductile In939+TiB2 by laser powder bed fusion

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081723%3A_____%2F25%3A00627719" target="_blank" >RIV/68081723:_____/25:00627719 - isvavai.cz</a>

Result on the web

<a href="https://www.sciencedirect.com/science/article/pii/S0921509325006707?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0921509325006707?via%3Dihub</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.msea.2025.148446" target="_blank" >10.1016/j.msea.2025.148446</a>

Result language

angličtina

Original language name

Additive manufacturing of strong and ductile In939+TiB2 by laser powder bed fusion

Original language description

Improving the printability and high-temperature mechanical performance of high aluminum and titanium content Inconel superalloys is of interest in aerospace, automotive, and energy industries. In aerospace applications, for instance, components such as turbine blades and engine parts require exceptional strength and ductility under extreme temperatures (above 800 °C), which more common Inconel alloys such as In718 and In625 struggle to provide. Therefore, this study explores the influence of TiB2 on the additive manufacturing of Inconel 939 superalloy (In939) by laser powder bed fusion (LPBF). TiB2 powders with a size of approximately 1–3 μm were decorated on the surfaces of Inconel 939 alloy powders via high-speed blending. Both pure In939 and In939+TiB2 samples were prepared by LPBF with varying laser power and scanning speed. Microstructural analysis of the as-printed specimens revealed that the TiB2 addition to Inconel 939 eliminated crack formation under all LPBF conditions tested. Consequently, the as-printed In939+TiB2 exhibited superior room temperature (RT) yield strength (1256 MPa) and ultimate tensile strength (1578 MPa) with reasonable tensile ductility (13–15 %) compared to the as-printed In939. Furthermore, In939+TiB2 shows exceptional high-temperature strength, demonstrating superior performance up to 850°C in contrast to other additively manufactured and cast In939 materials in the literature. This study paves the way for sectors including aerospace, automotive, and energy to significantly enhance the performance of critical components like turbine blades and engine parts made of In939 through LPBF.

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

20501 - Materials engineering

Project

—

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2025

Confidentiality

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

Name of the periodical

Materials Science and Engineering A Structural Materials Properties Microstructure and Processing

ISSN

0921-5093

e-ISSN

1873-4936

Volume of the periodical

939

Issue of the periodical within the volume

SEP

Country of publishing house

CH - SWITZERLAND

Number of pages

20

Pages from-to

148446

UT code for WoS article

001501978800006

EID of the result in the Scopus database

2-s2.0-105005413931