In:
Journal of Materials Research, Springer Science and Business Media LLC, Vol. 24, No. 8 ( 2009-08), p. 2605-2609
Abstract:
An in situ bulk ultrafine bimodal eutectic Al–Cu–Si composite was synthesized by solidification. This heterostructured composite with microstructural length scale hierarchy in the eutectic microstructure, which combines an ultrafine-scale binary cellular eutectic (α-Al + Al 2 Cu) and a nanometer-sized anomalous ternary eutectic (α-Al + Al 2 Cu + Si), exhibits high fracture strength (1.1 ± 0.1 GPa) and large compressive plastic strain (11 ± 2%) at room temperature. The improved compressive plasticity of the bimodal-nanoeutectic composite originates from homogeneous and uniform distribution of inhomogeneous plastic deformation (localized shear bands), together with strong interaction between shear bands in the spatially heterogeneous structure.
Type of Medium:
Online Resource
ISSN:
0884-2914
,
2044-5326
DOI:
10.1557/jmr.2009.0297
Language:
English
Publisher:
Springer Science and Business Media LLC
Publication Date:
2009
detail.hit.zdb_id:
54876-5
detail.hit.zdb_id:
2015297-8
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