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Effect of alloying elements on solidification of primary austenite in Ni-Mn-Cu cast iron

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Author(s): A. Janus | A. Kurzawa

Journal: Archives of Foundry Engineering
ISSN 1897-3310

Volume: 11;
Issue: SI 2;
Start page: 93;
Date: 2011;
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Keywords: primary austenite | solidification | austenitic cast iron | Ni-Mn-Cu cast iron

ABSTRACT
Within the research, determined were direction and intensity of alloying elements influence on solidification way (directional orvolumetric) of primary austenite dendrites in hypoeutectic austenitic cast iron Ni-Mn-Cu. 50 cast shafts dia. 20 mm were analysed.Chemical composition of the alloy was as follows: 1.7 to 3.3 % C, 1.4 to 3.1 % Si, 2.8 to 9.9 % Ni, 0.4 to 7.7 % Mn, 0 to 4.6 % Cu, 0.14 to0.16 % P and 0.03 to 0.04 % S. The discriminant analysis revealed that carbon influences solidification of primary austenite dendrites most intensively. It clearly increases the tendency to volumetric solidification. Influence of the other elements is much weaker. This means that the solidification way of primary austenite dendrites in hypoeutectic austenitic cast iron Ni-Mn-Cu does not differ from that in an unalloyed cast iron.
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