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The role of matrix microstructure in the creep behaviour of discontinuous fiber-reinforced AZ91 magnesium alloy
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SYSNO ASEP 0177945 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Ostatní články Title The role of matrix microstructure in the creep behaviour of discontinuous fiber-reinforced AZ91 magnesium alloy Author(s) Svoboda, Milan (UFM-A) RID, ORCID
Pahutová, Marie (UFM-A)
Kuchařová, Květa (UFM-A) RID, ORCID
Sklenička, Václav (UFM-A) RID, ORCID
Langdon, T. G. (US)Source Title Materials Science and Engineering A Structural Materials Properties Microstructure and Processing. - : Elsevier - ISSN 0921-5093
A324, 1-2 (2002), s. 151-156Number of pages 6 s. Action Symposium on Physics of Materials /8./ Event date 04.09.2000-08.09.2000 VEvent location Prague Country CZ - Czech Republic Event type WRD Language eng - English Country NL - Netherlands Keywords composites ; magnesium alloys ; creep Subject RIV JI - Composite Materials R&D Projects IAA2041902 GA AV ČR - Academy of Sciences of the Czech Republic (AV ČR) GA106/99/1717 GA ČR - Czech Science Foundation (CSF) GA106/99/0187 GA ČR - Czech Science Foundation (CSF) CEZ AV0Z2041904 - UFM-A Annotation Constant stress tensile creep tests were conducted to failure at temperatures 423 and 473 K on an AZ 91 (Mg-9wt%Al-1wt%Zn) alloy reinforced with 20 vol. % Al2O3 short fibres and on an unreinforced AZ 91 matrix alloy. The creep resistance of the reinforced material showed to be considerably improved compared to the matrix alloy. Microstructural investigation revealed that the most frequent morphology of the b-phase precipitates in the composite is continuous Mg17Al12 platelets. Detailed TEM investigations indicate that the matrix microstructure does not significantly influences the creep properties of both materials. This results confirm an idea that the creep strengthening in the composite is controlled by an effective load transfer between the matrix and the fibres. Workplace Institute of Physics of Materials Contact Yvonna Šrámková, sramkova@ipm.cz, Tel.: 532 290 485 Year of Publishing 2003
Number of the records: 1