Directed energy deposition of bulk Nb-Ta-Ti-Zr refractory complex concentrated alloy

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F26316919%3A_____%2F23%3AN0000036" target="_blank" >RIV/26316919:_____/23:N0000036 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/00216208:11320/23:10474187

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/abs/pii/S0167577X23001659" target="_blank" >https://www.sciencedirect.com/science/article/abs/pii/S0167577X23001659</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.matlet.2023.133980" target="_blank" >10.1016/j.matlet.2023.133980</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Directed energy deposition of bulk Nb-Ta-Ti-Zr refractory complex concentrated alloy

Popis výsledku v původním jazyce

Bulk Nb-Ta-Ti-Zr refractory complex concentrated alloy (RCCA) was prepared by additive manufacturing method of directed energy deposition (DED) from an equiatomic mixture of elemental powders. Using elemental powders instead of pre-alloyed powder is beneficial in terms of costs and variability of chemical composition. However, it is more demanding for optimization of deposition parameters. Variation of scanning velocity was used to study the effect of different heat inputs. It was found that a decreasing scanning velocity effectively decreases the number of undissolved Nb/Ta particles present in the microstructure. Moreover, employing of the platform preheating to 500 degrees C during deposition resulted in the best microstructure homogeneity among the studied asdeposited samples. Finally, homogenization annealing 1400 degrees C/24 h was performed. Despite the Thermo-Calc prediction of complete Ta particles dissolution, they remained still present in the material. Reasonable microstructure homogeneity of RCCA produced from elemental powders must be achieved already by optimization of deposition parameters while the homogenization annealing is not feasible for heterogeneities in the scale of powder particles size.

Název v anglickém jazyce

Directed energy deposition of bulk Nb-Ta-Ti-Zr refractory complex concentrated alloy

Popis výsledku anglicky

Bulk Nb-Ta-Ti-Zr refractory complex concentrated alloy (RCCA) was prepared by additive manufacturing method of directed energy deposition (DED) from an equiatomic mixture of elemental powders. Using elemental powders instead of pre-alloyed powder is beneficial in terms of costs and variability of chemical composition. However, it is more demanding for optimization of deposition parameters. Variation of scanning velocity was used to study the effect of different heat inputs. It was found that a decreasing scanning velocity effectively decreases the number of undissolved Nb/Ta particles present in the microstructure. Moreover, employing of the platform preheating to 500 degrees C during deposition resulted in the best microstructure homogeneity among the studied asdeposited samples. Finally, homogenization annealing 1400 degrees C/24 h was performed. Despite the Thermo-Calc prediction of complete Ta particles dissolution, they remained still present in the material. Reasonable microstructure homogeneity of RCCA produced from elemental powders must be achieved already by optimization of deposition parameters while the homogenization annealing is not feasible for heterogeneities in the scale of powder particles size.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20501 - Materials engineering

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

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

Rok uplatnění

2023

Kód důvěrnosti údajů

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

Název periodika

MATERIALS LETTERS

ISSN

0167-577X

e-ISSN

1873-4979

Svazek periodika

337

Číslo periodika v rámci svazku

APR 15 2023

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

3

Strana od-do

nestránkováno

Kód UT WoS článku

000996288800001

EID výsledku v databázi Scopus

2-s2.0-85149708444