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In Situ Formation of Particle Reinforced Al Matrix Composite by Selective Laser Melting of Al/Fe 2 O 3 Powder Mixture
Author(s) -
Dadbakhsh Sasan,
Hao Liang
Publication year - 2012
Publication title -
advanced engineering materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.938
H-Index - 114
eISSN - 1527-2648
pISSN - 1438-1656
DOI - 10.1002/adem.201100151
Subject(s) - materials science , selective laser melting , in situ , composite number , particle (ecology) , matrix (chemical analysis) , composite material , powder mixture , particle size , iron powder , metal matrix composite , chemical engineering , sintering , microstructure , oceanography , engineering , geology , physics , meteorology
This work presents a novel in situ reaction approach to produce Al matrix composites from a powder mixture of Al/5 wt% Fe 2 O 3 by using selective laser melting (SLM). It is found that the SLM process not only is able to produce three‐dimensional parts, but also is capable of activating an in situ reaction in the powder mixture, producing particles mainly from alumina (Al 2 O 3 ) and iron combinations (such as Fe 2+ Al 2 O 4 ) in Al matrix. These particles (as reinforcements) can be distributed uniformly with a good particle/matrix interface under controlled conditions.