Enhanced Plasticity of a Mg-8Li Alloy Reinforced with SiC Particles

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Mg8Li alloy reinforced by 7 vol.% SiC particles was processed by a powder metallurgical method. Samples were deformed in tension and compression at temperatures from room temperature up to 300 °C. The yield stress as well as the maximum stress decrease with increasing temperature. Decreasing stresses detected at temperatures higher than 150 °C indicate possible presence of recovery process/es. Estimated activation enthalpy is close to the activation enthalpy for the grain boundary sliding. Strain rate sensitivity was estimated at elevated temperatures. Enhanced plasticity was estimated at 300 °C. Light and scanning electron microscopy revealed the cavitations during the high temperature deformation.

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Periodical:

Edited by:

Pavel Šandera

Pages:

378-381

DOI:

10.4028/www.scientific.net/KEM.465.378

Citation:

Z. Trojanová and Z. Száraz, "Enhanced Plasticity of a Mg-8Li Alloy Reinforced with SiC Particles", Key Engineering Materials, Vol. 465, pp. 378-381, 2011

Online since:

January 2011

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$38.00

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