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Effects of particle size on microstructure of the matrix alloy in aluminum matrix composites

  • Harbin Institute of Technology
  • Chiba Institute of Technology

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Aluminum matrix composites, reinforced by 0.15μm and 5μm Al 2O3 particles with 40% volume fractions were fabricated by squeeze casting technique. The microstructure characterization near the interfaces of Al2O3p/1070Al composites was investigated by SADP and HREM techniques. Results showed that high-density dislocations were generated in the 5μm-Al2O3p/Al composite due to the thermal mismatch stress. In contrast, the matrix of the 0.15μum-Al 2O3p/Al composite appeared to be nearly free dislocations and some "micro distortion areas" of 1-5nm were observed, which was attributed to the dispersion of fine sub-micron particles and uniform distribution of the stress near the interfaces.

Original languageEnglish
Title of host publicationProgress in Light Metals, Aerospace Materials and Superconductors
PublisherTrans Tech Publications Ltd
Pages1655-1659
Number of pages5
EditionPART 3
ISBN (Print)0878494324, 9780878494323
DOIs
StatePublished - 2007
Event2006 Beijing International Materials Week, 2006 BIMW -International Conference on Aerospace Materials, ICAM 2006 - Beijing, China
Duration: 25 Jun 200630 Jun 2006

Publication series

NameMaterials Science Forum
NumberPART 3
Volume546-549
ISSN (Print)0255-5476
ISSN (Electronic)1662-9752

Conference

Conference2006 Beijing International Materials Week, 2006 BIMW -International Conference on Aerospace Materials, ICAM 2006
Country/TerritoryChina
CityBeijing
Period25/06/0630/06/06

Keywords

  • Metal matrix composites
  • Microstructure

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