Miniature mechanical testing of LMD-fabricated compositionally & microstructurally graded gamma titanium aluminides

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F26316919%3A_____%2F22%3AN0000042" target="_blank" >RIV/26316919:_____/22:N0000042 - isvavai.cz</a>

Výsledek na webu

<a href="https://link.springer.com/article/10.1557/s43578-022-00801-0" target="_blank" >https://link.springer.com/article/10.1557/s43578-022-00801-0</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1557/s43578-022-00801-0" target="_blank" >10.1557/s43578-022-00801-0</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Miniature mechanical testing of LMD-fabricated compositionally & microstructurally graded gamma titanium aluminides

Popis výsledku v původním jazyce

The design freedom in Laser Metal Deposition provided by the absence of a powder bed enables the fabrication of Functionally Graded Materials through Additive Manufacturing. For the first time, two suitable gamma-TiAl alloys (TiAl48Cr2Nb2, TiAl45Nb4C) are combined in direct and gradual transitions to generate different microstructure morphologies and, consequently, different mechanical properties within a component after an identical heat treatment. The influence of alloy composition, microstructure type, and material transition on the tensile properties and fracture toughness is analyzed through miniature testing. Miniature tensile tests show no orientation dependency in regard to the build direction and the composition/microstructure transition is not found to be a preferred fracture site. The miniature fracture toughness tests reveal that already small composition changes-insufficient to alter the microstructure configuration-can have a significant effect on the cracking behavior.

Název v anglickém jazyce

Miniature mechanical testing of LMD-fabricated compositionally & microstructurally graded gamma titanium aluminides

Popis výsledku anglicky

The design freedom in Laser Metal Deposition provided by the absence of a powder bed enables the fabrication of Functionally Graded Materials through Additive Manufacturing. For the first time, two suitable gamma-TiAl alloys (TiAl48Cr2Nb2, TiAl45Nb4C) are combined in direct and gradual transitions to generate different microstructure morphologies and, consequently, different mechanical properties within a component after an identical heat treatment. The influence of alloy composition, microstructure type, and material transition on the tensile properties and fracture toughness is analyzed through miniature testing. Miniature tensile tests show no orientation dependency in regard to the build direction and the composition/microstructure transition is not found to be a preferred fracture site. The miniature fracture toughness tests reveal that already small composition changes-insufficient to alter the microstructure configuration-can have a significant effect on the cracking behavior.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20501 - Materials engineering

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2022

Kód důvěrnosti údajů

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

Název periodika

JOURNAL OF MATERIALS RESEARCH

ISSN

0884-2914

e-ISSN

2044-5326

Svazek periodika

37

Číslo periodika v rámci svazku

23

Stát vydavatele periodika

DE - Spolková republika Německo

Počet stran výsledku

14

Strana od-do

4312-4325

Kód UT WoS článku

000883219900001

EID výsledku v databázi Scopus

2-s2.0-85141974106