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Flow mechanisms in creep of a short-fibre AZ91 alloy-based composite

  1. 1.
    SYSNO ASEP0024700
    Document TypeJ - Journal Article
    R&D Document TypeJournal Article
    Subsidiary JOstatní články
    TitleFlow mechanisms in creep of a short-fibre AZ91 alloy-based composite
    TitleDeformační mechanismy při creepu kompozitní slitiny AZ91 zpevněné krátkými vlákny
    Author(s) Pahutová, Marie (UFM-A)
    Sklenička, Václav (UFM-A) RID, ORCID
    Kuchařová, Květa (UFM-A) RID, ORCID
    Svoboda, Milan (UFM-A) RID, ORCID
    Langdon, T. G. (US)
    Source TitleKovové materiály. - : Ústav fyziky materiálu AV ČR, v. v. i. - : Ústav materiálov a mechaniky strojov SAV. - : Ústav materiálového výskumu SAV. - : Strojnícka fakulta STU - ISSN 0023-432X
    43 2005, č. 1 (2005), s. 34-44
    Number of pages11 s.
    Languageeng - English
    CountrySK - Slovakia
    KeywordsAZ91 magnesium alloy ; metal matrix composite ; short fibre reinforcement
    Subject RIVJG - Metallurgy
    R&D ProjectsGA106/03/0901 GA ČR - Czech Science Foundation (CSF)
    CEZAV0Z20410507 - UFM-A (2005-2011)
    AnnotationA comparison between the creep characteristics of an AZ91 magnesium alloy reinforced with 20 vol.% Al2O3 short fibres and an unreinforced AZ91 matrix alloy shows that the creep resistance of the reinforced material is considerably improved compared to the matrix alloy. It is suggested that the creep strengthening in the composite arises mainly from the existence of a threshold stress and the load transfer effect. The values of the threshold stress in the creep of the composite at temperatures in the range from 373 to 673 K were estimated using standard methods. It is proposed that the threshold stress arises from an attractive interaction between mobile dislocations and Mg17(Al, Zn)12 precipitates.
    WorkplaceInstitute of Physics of Materials
    ContactYvonna Šrámková, sramkova@ipm.cz, Tel.: 532 290 485
    Year of Publishing2006
Number of the records: 1  

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