铸造2017，Vol.66Issue(9)：962-966,5.
蠕墨铸铁中石墨的三维空间结构表征
Three-Dimensional Spatial Structure Characteristics of Graphite in Vermicular Graphite Cast Iron
摘要
Abstract
It is crucial to characterize the spatial structure and morphology of graphite for predicting and improving properties of vermicular graphite cast iron (VGI). In this study, based on VGI with different vermiculation percent (61.0%, 68.9%, 82.0%and 92.2%respectively), the three-dimensional morphology of graphite was reconstructed by means of X-Ray tomography (XRT) and the connectivity of graphite was quantitatively characterized. And then the relationship between connectivity and properties was discussed in detail. The results show that the larger the size of graphite in VGI is, the more obvious coral feature is. The connectivity of graphite is higher and higher with the increasing of vermiculation percent. In addition, compared to two dimensional vermiculation percent, the three dimensional connectivity is more accurate and comprehensive for characterizing the spatial structure and morphology of graphite. It is of great reference value for the preparation of high performance VGI.关键词
蠕墨铸铁/蠕化率/石墨形态/连通性Key words
vermicular graphite cast iron/percent of vermiculation/graphite morphology/connectivity分类
矿业与冶金引用本文复制引用
马志军,文琼,冯云鹏,杨雨,杨忠,李建平..蠕墨铸铁中石墨的三维空间结构表征[J].铸造,2017,66(9):962-966,5.基金项目
国家基础研究项目(61322401) （61322401）
西安工业大学校长基金重点项目(XAGDXJJ15007). （XAGDXJJ15007）
