The origin and the effect of the fcc phase in sintered HfNbTaTiZr

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389021%3A_____%2F21%3A00538131" target="_blank" >RIV/61389021:_____/21:00538131 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/68378271:_____/21:00538131 RIV/00216208:11320/21:10439052

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/abs/pii/S0167577X20319327?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/abs/pii/S0167577X20319327?via%3Dihub</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.matlet.2020.129224" target="_blank" >10.1016/j.matlet.2020.129224</a>

Jazyk výsledku

angličtina

Název v původním jazyce

The origin and the effect of the fcc phase in sintered HfNbTaTiZr

Popis výsledku v původním jazyce

The growing interest in preparing refractory high entropy alloys via powder metallurgy reveals significant sensitivity to impurities, influencing the phase composition and microstructure and, consequently, the mechanical properties. Mechanical alloying of commercial purity powders is a cost-effective way of material preparation leading to a very fine microstructure when spark plasma sintering is used. However, the atmosphere of the milling process plays a significant role. This study shows that the phase composition of the HfNbTaTiZr alloy may be tailored by milling in ambient atmosphere, in argon or in nitrogen. Formation of a new fcc-ZrHfTi phase as a complex nitrogen and oxygen compound was elucidated and its significant hardening effect was shown. Finally, exceptional hardness was achieved by the synergic effect of nano-grained structure and high volume fraction of fcc-ZrHfTi phase.

Název v anglickém jazyce

The origin and the effect of the fcc phase in sintered HfNbTaTiZr

Popis výsledku anglicky

The growing interest in preparing refractory high entropy alloys via powder metallurgy reveals significant sensitivity to impurities, influencing the phase composition and microstructure and, consequently, the mechanical properties. Mechanical alloying of commercial purity powders is a cost-effective way of material preparation leading to a very fine microstructure when spark plasma sintering is used. However, the atmosphere of the milling process plays a significant role. This study shows that the phase composition of the HfNbTaTiZr alloy may be tailored by milling in ambient atmosphere, in argon or in nitrogen. Formation of a new fcc-ZrHfTi phase as a complex nitrogen and oxygen compound was elucidated and its significant hardening effect was shown. Finally, exceptional hardness was achieved by the synergic effect of nano-grained structure and high volume fraction of fcc-ZrHfTi phase.

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

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2021

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

—

Svazek periodika

286

Číslo periodika v rámci svazku

March

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

5

Strana od-do

129224

Kód UT WoS článku

000615986100026

EID výsledku v databázi Scopus

2-s2.0-85098124278