Multi-phase Al-based ultrafine composite with multi-scale microstructure

J. M. Park, K. B. Kim, D. H. Kim, N. Mattern, R. Li, G. Liu, J. Eckert

Research output: Contribution to journalArticlepeer-review

50 Citations (Scopus)


A new class of Al-base multi-phase ultrafine composites with multi-scale microstructure, which exhibits high strength and large compressive plasticity at ambient temperature, has been developed in the Al-Cu-Si ternary system. The formation of the favorable multi-phase multi-modal structure can be achieved by proper alloy selection and by controlling the solidification process. The developed hierarchical ultrafine composites exhibit high fracture strength of ∼1 GPa and large compressive plasticity up to ∼25%. The large macroscopic plastic strain is attributed to the combination of dislocation-based slip deformation in the ductile phase and extensive shear banding in the intermetallic phase.

Original languageEnglish
Pages (from-to)1829-1833
Number of pages5
Issue number10
Publication statusPublished - 2010 Oct

Bibliographical note

Funding Information:
This work was supported by the Global Research Laboratory Program of the Korea Ministry of Education, Science and Technology . Stimulating discussions with G. Wang, J. Jayaraj, K. Chattopadhyay and S. Pauly are gratefully acknowledged.

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry


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