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Flow mechanisms in creep of a short-fibre AZ91 alloy-based composite
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SYSNO ASEP 0024700 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Ostatní články Title Flow mechanisms in creep of a short-fibre AZ91 alloy-based composite Title Deformační 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 Title Kovové 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. 34-44Number of pages 11 s. Language eng - English Country SK - Slovakia Keywords AZ91 magnesium alloy ; metal matrix composite ; short fibre reinforcement Subject RIV JG - Metallurgy R&D Projects GA106/03/0901 GA ČR - Czech Science Foundation (CSF) CEZ AV0Z20410507 - UFM-A (2005-2011) Annotation A 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. Workplace Institute of Physics of Materials Contact Yvonna Šrámková, sramkova@ipm.cz, Tel.: 532 290 485 Year of Publishing 2006
Number of the records: 1