Počet záznamů: 1

Influence of a prior pressurization treatment on creep behaviour of an ultrafine-grained Zr-2.5%Nb alloy

SYSNO ASEP	0543339
Druh ASEP	J - Článek v odborném periodiku
Zařazení RIV	J - Článek v odborném periodiku
Poddruh J	Článek ve WOS
Název	Influence of a prior pressurization treatment on creep behaviour of an ultrafine-grained Zr-2.5%Nb alloy
Tvůrce(i)	Sklenička, Václav (UFM-A)_{RID, ORCID} Dvořák, Jiří (UFM-A)_{RID, ORCID} Král, Petr (UFM-A)_{RID, ORCID} Betekhtin, V. I. (RU) Kadomtsev, A. G. (RU) Narykova, M. V. (RU) Dobatkin, S.V. (RU) Kuchařová, Květa (UFM-A)_{RID, ORCID} Kvapilová, Marie (UFM-A)_{RID, ORCID}
Celkový počet autorů	9
Číslo článku	141570
Zdroj.dok.	Materials Science and Engineering A Structural Materials Properties Microstructure and Processing. - : Elsevier - ISSN 0921-5093 Roč. 820, JUL (2021)
Poč.str.	13 s.
Jazyk dok.	eng - angličtina
Země vyd.	CH - Švýcarsko
Klíč. slova	Creep testing ; Electron microscopy ; High hydrostatic pressure ; Nanoporosity ; Ultrafine-grained material ; Zirconium alloy
Vědní obor RIV	JG - Hutnictví, kovové materiály
Obor OECD	Materials engineering
CEP	GC20-14450J GA ČR - Grantová agentura ČR
Způsob publikování	Omezený přístup
Institucionální podpora	UFM-A - RVO:68081723
UT WOS	000668745100001
EID SCOPUS	85107754279
DOI	10.1016/j.msea.2021.141570
Anotace	The effect of an application of an external high hydrostatic pressure on creep behaviour, the microstructure, and nanoscale porosity in an ultrafine-grained cladding Zr-2.5 wt%Nb alloy processed by equal channel angular pressing (ECAP) was investigated by comparative creep testing. The results show that, under identical creep loading conditions, ECAP processed specimens subjected to subsequent high hydrostatic pressurization treatment prior to creep exposure exhibited no substantial differences in creep behaviour compared to specimens processed by ECAP only. The selected level of high hydrostatic pressurization treatment used in this study is not indicative of an effective removal of nanoscale porosity resulting from ECAP processing. By comparison to the as-received state, an increasing number of ECAP passes leads to a significant weakening of creep resistence of the alloy. It is suggested that the reasons for the occurrence of creep weakening after ECAP processing are an accumulation of high-angle grain boundaries, multiplication of dislocations, coarsening and/or dissolution of the Nd-rich second phase precipitates, and dislocation/particle interactions.
Pracoviště	Ústav fyziky materiálu
Kontakt	Yvonna Šrámková, sramkova@ipm.cz, Tel.: 532 290 485
Rok sběru	2022
Elektronická adresa	https://www.sciencedirect.com/science/article/pii/S092150932100839X?via%3Dihub

Počet záznamů: 1