The manuscript presents changes of macrostructure and microstructure of plate and shaft castings made of cobalt alloy MAR-M509. They have different values of geometric module M within the range of 0.91-5.56 mm that have been created with multilayer ceramic shell moulds (MSC) of different initial temperatures of 200-1000℃ at the moment of pouring. It has been stated that decrease of initial temperature of MSC and value M causes increase in casting fine-granularity, distance reduction between dendrite branches λ2 and refinement of initial carbides in irregular ternary eutectic γ+$M23C6+MC.
ZENON
. Temperature influence of ceramic form on the structure of cobalt alloy MAR-M509 castings[J]. Acta Metallurgica Sinica (English Letters), 2011
, 24(1)
: 23
-33
.
DOI: 10.11890/1006-7191-111-23
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