Počet záznamů: 1  

Creep properties of aluminium processed by ECAP

  1. 1.
    0471641 - UFM-A 2017 RIV SK eng J - Článek v odborném periodiku
    Král, Petr - Dvořák, Jiří - Jäger, Aleš - Kvapilová, Marie - Horita, Z. - Sklenička, Václav
    Creep properties of aluminium processed by ECAP.
    Kovové materiály. Roč. 54, č. 6 (2016), s. 441-451. ISSN 0023-432X
    Grant CEP: GA MŠk(CZ) LQ1601
    Institucionální podpora: RVO:68081723 ; RVO:68378271
    Klíčová slova: equal channel angular pressing (ECAP) * aluminium * ultrafine-grained microstructure * creep
    Kód oboru RIV: JG - Hutnictví, kovové materiály; JG - Hutnictví, kovové materiály (FZU-D)
    Impakt faktor: 0.366, rok: 2016

    The creep behaviour of pure polycrystalline aluminium and single crystals processed by
    equal-channel angular pressing (ECAP) was investigated in order to understand the relationships
    between heterogeneity of microstructure and creep behaviour. Tensile creep tests
    were performed at 373 K on specimens processed by 1 and 4 ECAP passes. For comparison
    purposes, the creep tests were also carried out on coarse-grained specimens. Microstructure
    analyses showed that application of ECAP technique on polycrystalline aluminium and single
    crystals led to the formation of significantly different microstructures even after a relatively
    high number of ECAP passes. The different creep behaviour of ECAP-processed single crystals
    and polycrystalline aluminium is influenced by inhomogeneity of microstructure. Further,
    the creep behaviour of specimens processed by 4 ECAP passes is affected by grain-boundary
    mediated processes like enhanced recovery of dislocations at high-angle grain boundaries in
    grains finer than quasi-stationary subgrain size and grain boundary sliding.
    Trvalý link: http://hdl.handle.net/11104/0269057