DISTRIBUTION OF SULFUR IN HIGH TEMPERATURE PHASES OF CAST IRON

Abstract

Abstract: The distribution of subversive element sulfur in high temperature phases during solidification of cast iron was investigated by means of liquid quenching method and autoradiography.The results show that in grey cast iron,sulfur is concentrated in the liquid,flake graphite and in the peripherial area of D-type supercooled graphite eutectic cells,but less sulfur is in austenite. Besides,the content of sulfur in A-type graphite is higher than that in D-type graphite,and sulfur content in eutectic austenite is a little higher than that in primary austenite.While,in nodular graphite cast iron less sulfur is in liquid and austenite,but more in nodular graphite. The blackness of the spots on the emulsion film corresponds to the atomic percentage of radioactive substances located on the surface of the specimen.

Key words: cast iron, autoradiograph, sulfur, graphite

HAN Qiyong YANG Ping SONG Weixi University of Science and Technolonology Beijing,Beijing,China Division of Metallography,Dept.of Materials,University of Science and Technology Beijing,Beijing,China. DISTRIBUTION OF SULFUR IN HIGH TEMPERATURE PHASES OF CAST IRON[J]. Acta Metallurgica Sinica (English Letters), 1989, 2(10): 230-234.

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DISTRIBUTION OF SULFUR IN HIGH TEMPERATURE PHASES OF CAST IRON

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