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Einfluss des elektromagnetischen Schleudergießens auf das Erstarrungsgefüge beim gegossenen Schnellarbeitsstahl
Author(s) -
Zhang T.,
Wang Q.,
Song X.,
Fu H.
Publication year - 2011
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.201100633
Subject(s) - centrifugal casting (silversmithing) , materials science , metallurgy , ledeburite , microstructure , austenite , carbide , casting , eutectic system , alloy , high speed steel , volume fraction , martensite , sand casting , composite material , cementite , mold
Using self‐made electromagnetic centrifugal casting machine, optical microscopy (OM) and D/max2200pc X‐ray diffraction, the solidification microstructure and phases of as‐cast high speed steel(HSS) roll made by sand casting, centrifugal casting and electromagnetic centrifugal casting were investigated. The experiment results show that the phases of as‐cast high speed steel (HSS) roll are alloy carbide (such as W 2 C, VC, Cr 7 C 3 ), martensite and austenite. The centrifugal casting and electromagnetic centrifugal casting can apparently improve the solidification structure of HSS roll. With the increase of electromagnetic field intensity (B), the volume fraction of austenite in the HSS solidification structure increased obviously and eutectic ledeburite decreased, the secondary carbide precipitated from the austenite is more fine and distribution of secondary carbide is more even.