Sequence of phase transformations in metastable β Zr-12Nb alloy studied in situ by HEXRD and complementary techniques

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F23%3A10468394" target="_blank" >RIV/00216208:11320/23:10468394 - isvavai.cz</a>

Výsledek na webu

<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=-HY86ChWpj" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=-HY86ChWpj</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.jmrt.2023.02.076" target="_blank" >10.1016/j.jmrt.2023.02.076</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Sequence of phase transformations in metastable β Zr-12Nb alloy studied in situ by HEXRD and complementary techniques

Popis výsledku v původním jazyce

Phase transformations in a metastable beta Zr-12Nb alloy were investigated by high-energy X-ray diffraction (HEXRD) measured simultaneously with thermal expansion in situ during linear heating from room temperature to 800 degrees C. Complementary in-situ methods of elec-trical resistance and differential scanning calorimetry, which were performed using the same heating conditions as in the HEXRD experiment, provided additional information on the transformation sequence occurring in the Zr-12Nb alloy. Two bcc phases with a different lattice parameter, l3Zr and l3Nb, were observed in the investigated temperature range and identified using the phase diagram of the Zr-Nb system. In the initial solution-treated condition, metastable l3Zr phase and athermal u particles are present in the material. At about 300 degrees C, Nb-rich l3Nb phase starts to form in the material and the original l3Zr phase gradually disappears. Ex-situ observations of the microstructure using transmission elec-tron microscopy revealed a cuboidal shape of the u particles, which is related to a relatively large misfit between the u and l3 phases. At 560 degrees C, u solvus was observed, identified by an abrupt dissolution of u particles which was followed by growth of the a phase.(c) 2023 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).

Název v anglickém jazyce

Sequence of phase transformations in metastable β Zr-12Nb alloy studied in situ by HEXRD and complementary techniques

Popis výsledku anglicky

Phase transformations in a metastable beta Zr-12Nb alloy were investigated by high-energy X-ray diffraction (HEXRD) measured simultaneously with thermal expansion in situ during linear heating from room temperature to 800 degrees C. Complementary in-situ methods of elec-trical resistance and differential scanning calorimetry, which were performed using the same heating conditions as in the HEXRD experiment, provided additional information on the transformation sequence occurring in the Zr-12Nb alloy. Two bcc phases with a different lattice parameter, l3Zr and l3Nb, were observed in the investigated temperature range and identified using the phase diagram of the Zr-Nb system. In the initial solution-treated condition, metastable l3Zr phase and athermal u particles are present in the material. At about 300 degrees C, Nb-rich l3Nb phase starts to form in the material and the original l3Zr phase gradually disappears. Ex-situ observations of the microstructure using transmission elec-tron microscopy revealed a cuboidal shape of the u particles, which is related to a relatively large misfit between the u and l3 phases. At 560 degrees C, u solvus was observed, identified by an abrupt dissolution of u particles which was followed by growth of the a phase.(c) 2023 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).

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

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

Journal of Materials Research and Technology

ISSN

2238-7854

e-ISSN

2214-0697

Svazek periodika

2023

Číslo periodika v rámci svazku

23

Stát vydavatele periodika

BR - Brazilská federativní republika

Počet stran výsledku

10

Strana od-do

5260-5269

Kód UT WoS článku

000964130800001

EID výsledku v databázi Scopus

2-s2.0-85149765405