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Creep processes in magnesium alloys and their composites

Sklenicka, V., Pahutova, M., Kucharova, K., Svoboda, M. and Langdon, T.G. (2002) Creep processes in magnesium alloys and their composites Metallurgical and Materials Transactions, 33A, (3A), pp. 883-889.

Record type: Article


A comparison is made between the creep characteristics of two squeeze-cast magnesium alloys (AZ 91 and QE 22) reinforced with 20 vol pct Al2O3 short fibers and the unreinforced AZ 91 and QE 22 matrix alloys. The results show the creep resistance of the reinforced materials is considerably improved by comparison with the unreinforced matrix alloys. It is suggested that creep strengthening in these short-fiber composites arises primarily from the existence of a threshold stress and the effect of load transfer. By testing samples to failure, it is demonstrated that the unreinforced and reinforced materials exhibit similar times to failure at the higher stress levels. A detailed microstructural investigation by transmission electron microscopy (TEM) reveals no substantial changes in matrix microstructure due to the presence of the reinforcement. This suggests that direct composite strengthening dominates over indirect effects.

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Published date: 2002
Additional Information: Mid-March issue


Local EPrints ID: 23801
PURE UUID: 08b51119-2449-43b9-8e31-cdd503801d0b
ORCID for T.G. Langdon: ORCID iD

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Date deposited: 28 Mar 2006
Last modified: 17 Jul 2017 16:16

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Author: V. Sklenicka
Author: M. Pahutova
Author: K. Kucharova
Author: M. Svoboda
Author: T.G. Langdon ORCID iD

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