Journal
JOURNAL OF ALLOYS AND COMPOUNDS
Volume 454, Issue 1-2, Pages 118-122Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2006.12.024
Keywords
B(4)C particulates reinforced aluminum matrix composites; mechanical alloying; microstructure; interface
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The microstructure and interface of B(4)C particulate reinforced 2024 aluminum alloy matrix composites produced by mechanical alloying and hot extrusion were investigated. The results showed that the B(4)C particles could be dispersed into based alloy uniformly by high-energy milling technique. The twin structure of B(4)C particle was detected frequently in this experiment. A refined microstructure of matrix was obtained with size of sub-grains about 400 nm. EDX, TEM and SAD analysis indicated that the MgO particles were formed near the interface during fabrication. The temperature increment during high-energy milling was attributed to the formation of B(2)O(3) which promoting generation of MgO particles during hot consolidation processing. (C) 2006 Elsevier B.V. All rights reserved.
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