Influence of Microstructural Inhomogenities on Internal Stress and Strain Distributions during Creep

Abstract:

The influence of the microstructure of metallic materials on its creep behavior is complex. Besides the chemical composition, the distinct configuration of the microstructural elements has a major influence on the deformation processes. In the presented work a physically based Finite Element model has been applied to study creep behavior on a microstructural level. The main focus is set on the local influence of grain boundaries and triple points on creep straining. The results indicate that such microstructural configurations lead to a highly heterogeneous creep strain distribution. Thus, this study is an important step to a deeper understanding of complex local interactions of creep phenomena.

• Periodical: Advanced Materials Research (Volume 409)
• Pages: 411-416
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.409.411
• Online since: November 2011
• Authors: Cornelia Pein, Bernhard Sonderegger, Christof Sommitsch
• Keywords: Creep, Microstructure, Modeling, Triple Junctions

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