中国铸造2007，Vol.4Issue(3)：210-214,5.
Effects of carbon content and solidification rate on thermal conductivity of grey cast iron
Effects of carbon content and solidification rate on thermal conductivity of grey cast iron
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作者信息
- 1. Jink(o)ping University, Dept. of Mechanical Engineering/Component Technology, J(o)nk(o)ping, SE-551 11, Sweden;Jink(o)ping University, Dept. of Mechanical Engineering/Component Technology, J(o)nk(o)ping, SE-551 11, Sweden;Jink(o)ping University, Dept. of Mechanical Engineering/Component Technology, J(o)nk(o)ping, SE-551 11, Sweden
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摘要
Abstract
The thermal conductivity or diffusivity of pearlitic grey irons with various carbon contents is investigated by the laser flash method. The materials are cast in controlled thermal environments and produced in three dissimilar cooling rates. The cooling rate together with the carbon content largely influence the thermal conductivity of grey iron. Linear relationships exist between the thermal conductivity and the carbon content, the carbon equivalent and the fraction of former primary solidified austenite transformed into pearlite. The work shows that optimal thermal transport properties are obtained at medium cooling rates. Equations describing the thermal conductivity of pearlite,solidified as pre-eutectic austenite, and the eutectic of grey iron are derived. The thermal conductivity of pearlitic grey iron is modeled at both room temperature and elevated temperature with good accuracy.关键词
grey iron/ thermal conductivity/ thermal diffusivity/ carbon content/ carbon equivalent/ colour etching/graphite morphology/ eutectic cell size/ primary austenite/ cooling rateKey words
grey iron/ thermal conductivity/ thermal diffusivity/ carbon content/ carbon equivalent/ colour etching/graphite morphology/ eutectic cell size/ primary austenite/ cooling rate分类
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..Effects of carbon content and solidification rate on thermal conductivity of grey cast iron
[J].中国铸造,2007,4(3):210-214,5.
