Premium
Three‐dimensional morphology of eutectic silicon in as‐cast Al‐20 wt% Si alloy with ultrasonic treatment
Author(s) -
Zhang Z.,
Liu X.,
Bao L.,
Hu W.,
Le Q.,
Cui J.
Publication year - 2017
Publication title -
materialwissenschaft und werkstofftechnik
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.285
H-Index - 38
eISSN - 1521-4052
pISSN - 0933-5137
DOI - 10.1002/mawe.201700539
Subject(s) - eutectic system , liquidus , materials science , silicon , morphology (biology) , alloy , ultrasonic sensor , metallurgy , composite material , genetics , physics , acoustics , biology
Three‐dimensional morphology of eutectic silicon in as‐cast Al‐20 wt% Si alloys with ultrasonic treatment above liquidus has been investigated in this paper. The results show that ultrasonic treatment above liquidus could not refine the primary silicon phase very well, but is capable of modifying the morphology of eutectic silicon. The fracture of eutectic silicon occurred resulting in both huge reduction of silicon grain sizes and changes of morphology from large plate‐like to interconnected thin flake and coral‐like. The evolution mechanisms of the eutectic silicon morphology in Al‐20 wt% Si alloys with ultrasonic treatment were also preliminarily discussed.