Liquid-to-liquid transition around the glass-transition temperature in a glass-forming metallic liquid

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F44555601%3A13520%2F22%3A43896614" target="_blank" >RIV/44555601:13520/22:43896614 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/pii/S1359645421009666?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S1359645421009666?via%3Dihub</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.actamat.2021.117588" target="_blank" >10.1016/j.actamat.2021.117588</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Liquid-to-liquid transition around the glass-transition temperature in a glass-forming metallic liquid

Popis výsledku v původním jazyce

Liquid-to-liquid transition (LLT) refers to a first-order phase transition between two liquid states. Here, the relationship between the liquid dynamics and LLT is studied by performing in-situ vitrification, annealing, and heating of Pd42.5Ni42.5P15 metallic-glass-forming liquid via fast scanning calorimetry. Unlike isokinetic LLTs reported in metallic liquids, here isothermal-annealing induced forward and heating-initiated reversible LLT are detected, and the LLT mechanisms of both nucleation-growth and spinodal-decomposition types are revealed by controlling the annealing temperature. A two-step-like increase in the specific heat of the glass transition is observed upon reheating reflecting the coexistence of two distinct liquids. The detected transition conforms to LLT behavior observed in molecular liquids; however, it can also proceed as a glass-to-glass transition below the conventional glass-transition temperature. This work not only provides a complementary understanding of the nature of LLTs in both metallic and molecular liquids but also reveals a unique first-order glass-to-glass transition in the multi-component metallic system.

Název v anglickém jazyce

Liquid-to-liquid transition around the glass-transition temperature in a glass-forming metallic liquid

Popis výsledku anglicky

Liquid-to-liquid transition (LLT) refers to a first-order phase transition between two liquid states. Here, the relationship between the liquid dynamics and LLT is studied by performing in-situ vitrification, annealing, and heating of Pd42.5Ni42.5P15 metallic-glass-forming liquid via fast scanning calorimetry. Unlike isokinetic LLTs reported in metallic liquids, here isothermal-annealing induced forward and heating-initiated reversible LLT are detected, and the LLT mechanisms of both nucleation-growth and spinodal-decomposition types are revealed by controlling the annealing temperature. A two-step-like increase in the specific heat of the glass transition is observed upon reheating reflecting the coexistence of two distinct liquids. The detected transition conforms to LLT behavior observed in molecular liquids; however, it can also proceed as a glass-to-glass transition below the conventional glass-transition temperature. This work not only provides a complementary understanding of the nature of LLTs in both metallic and molecular liquids but also reveals a unique first-order glass-to-glass transition in the multi-component metallic system.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10302 - Condensed matter physics (including formerly solid state physics, supercond.)

Projekt

<a href="/cs/project/LM2018124" target="_blank" >LM2018124: Nanomateriály a nanotechnologie pro ochranu životního prostředí a udržitelnou budoucnost</a><br>

Návaznosti

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

Rok uplatnění

2022

Kód důvěrnosti údajů

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

Název periodika

Acta Materialia

ISSN

1359-6454

e-ISSN

1873-2453

Svazek periodika

225

Číslo periodika v rámci svazku

117588

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

10

Strana od-do

1-10

Kód UT WoS článku

000788850400005

EID výsledku v databázi Scopus

2-s2.0-85122124231