Creep in Nanostructured Materials

0574066 - ÚFM 2024 RIV JP eng J - Journal Article
Sklenička, Václav - Král, Petr - Dvořák, Jiří - Kvapilová, Marie - Kuchařová, Květa
Creep in Nanostructured Materials.
Materials Transactions. Roč. 64, č. 7 (2023), s. 1566-1574. ISSN 1345-9678. E-ISSN 1347-5320
Institutional support: RVO:68081723
Keywords : creep * severe plastic * deformation * ultrafine-grained materials * microstructure evolution
OECD category: Materials engineering
Impact factor: 1.2, year: 2022
Method of publishing: Limited access
https://www.jstage.jst.go.jp/article/matertrans/64/7/64_MT-MF2022035/_article

The creep behaviour and properties of nanostructured materials are attributed to their operating deformation mechanisms, which could be different from those in their coarse-grained counterparts. Accordingly, in this review, recent progress on the creep behaviour of nanostructured materials will be described. The results of large sets of tensile creep tests on selected more complex metallic materials are analysed for evaluating the effect of different SPD processing methods on creep resistance at high temperatures. The resultant creep characteristics are compared with those attained in unprocessed conditions of the same materials. By contrast to the creep behaviour of UFG pure metals SPD processing of more complex materials mostly exhibit no essentially improved creep resistance. Evaluated stress dependences of the creep rate and the creep life suggest that creep deformation mechanisms in UFG materials are similar to those operating in coarse-grained materials. However, creep mechanisms in SPD processed materials are not clearly resolved and this is due to complexity of phenomenon and very small number of studies that have been carried out before now.
Permanent Link: https://hdl.handle.net/11104/0344432