Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1578725 | Materials Science and Engineering: A | 2011 | 5 Pages |
The effect of reinforcement clustering on the steady-state creep behaviors of unidirectional SiC whisker reinforced aluminum matrix composite was investigated using finite element models with two different microstructures: Homogeneous microstructure was made up of a random dispersion of whiskers and the heterogeneous (clustered) one was idealized using hierarchical multiscale technique with 2D microstructure image of this material. Based on the numerical results, a possible mechanism for the ‘anomalously high’ creep stress exponent was proposed in the light of current knowledge.
Research highlights► Effect of reinforcement clustering on creep behaviors of composites was analyzed. ► Clustered microstructure may attribute to higher stress exponents of composites. ► This mechanism seemed appropriate to explain realistic composite creep behaviors. ► These results should provide a means to understanding creep mechanics of composite.