Influence of a prior pressurization treatment on creep behaviour of an ultrafine-grained Zr-2.5%Nb alloy
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081723%3A_____%2F21%3A00543339" target="_blank" >RIV/68081723:_____/21:00543339 - isvavai.cz</a>
Result on the web
<a href="https://www.sciencedirect.com/science/article/pii/S092150932100839X?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S092150932100839X?via%3Dihub</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.msea.2021.141570" target="_blank" >10.1016/j.msea.2021.141570</a>
Alternative languages
Result language
angličtina
Original language name
Influence of a prior pressurization treatment on creep behaviour of an ultrafine-grained Zr-2.5%Nb alloy
Original language description
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.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
20501 - Materials engineering
Result continuities
Project
<a href="/en/project/GC20-14450J" target="_blank" >GC20-14450J: The damage evolution in ultrafine-grained metals and alloys under fatigue and creep loading</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2021
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Materials Science and Engineering A Structural Materials Properties Microstructure and Processing
ISSN
0921-5093
e-ISSN
1873-4936
Volume of the periodical
820
Issue of the periodical within the volume
JUL
Country of publishing house
CH - SWITZERLAND
Number of pages
13
Pages from-to
141570
UT code for WoS article
000668745100001
EID of the result in the Scopus database
2-s2.0-85107754279