The Dependence of the Structure of Eutectic Fe-C on Freezing and Annealing Conditions and on the Impurity Content
In previous investigations, it was shown that the shape of the melting curve for Fe-C eutectic fixed points depends not only on impurity content but also on freezing and annealing conditions 1. The change of eutectic structure would be correlated with the change in shape of the melting curve. From this point of view, the cross-section of the eutectic structure of Fe-C was analysed in 2D using the image analysis software Image-J for sixteen Fe-C eutectic ingots that were produced from a selected combination of four different materials with different impurity contents and five different freezing and annealing conditions. We found that the structure of Fe-C eutectic depends on freezing rate and annealing time. The Average distance between graphite particles λ versus (TE-Tfurnace) -1/2 and λ versus v-1/2 were compared with the theoretical prediction, where TE is the eutectic transition temperature, Tfurnace is the furnace set point during the freeze, and v is the solid-liquid interface velocity.
Metrology High-temperature fized point Radiation thermometry Fe-C eutectic Structure of Eutectic 2D image analysis
ZHENG Wei P.Bloembergen Y.Yamada Y.Wang WANG Tao
National Institute of Metrology, Beijing 100013, China National Metrology Institute of Japan (NMIJ), AIST, Tsukuba, Japan
国际会议
2008年国际温度与热物性测量会议(TEMP BEIJING 2008)
北京
英文
109-115
2008-10-20（万方平台首次上网日期，不代表论文的发表时间）