Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1584562 | Materials Science and Engineering: A | 2007 | 5 Pages |
Abstract
The creep resistance of AZ91D alloy has been studied in uniaxial compression tests at temperature ranges from 275 °C to 325 °C. The initial microstructure of the alloy consists of α phase and β phase precipitated in the grain boundary. The minimum creep rate dependence on applied stress and the temperature is also analyzed in detail. We find that the stress exponent n is close to the theoretical values (3 or 5) and the activation energy Q for creep varies from 121 kJ/mol to 171 kJ/mol. Creep could be controlled by high-temperature climb and cross-slip of dislocation at different temperatures.
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Physical Sciences and Engineering
Materials Science
Materials Science (General)
Authors
Jin-hua Guo, Li-qing Chen, Yong-bo Xu, Fa-zeng Lian,