摘要
利用分形物理分析的方法定量地描述了定向凝固过程中MC型碳化物的生长形态发现随着凝固速率的增加,MC由宽大的枝叶状演化为三级分支的枝簇状,其信息维数随凝固速率呈指数规律上升。
The growth morphologies of MC type carbide in a directional solidification
was described quantitatively by means of the fractal analysis. The relationship between the in-
formation dimensionality of MC evolved from the lenient branch-leaves into developed
branch-cluster with the increase of the solidiflcation rate, and the information dimensionality
of MC presented the exponential law with the change of solidification rate. In combination
with the thermodynamic of nonequilibrium, the physical mechanism of MC morphology evo-
lution was discussed when the controlled parameter-solidification rate changed.
出处
《金属学报》
SCIE
EI
CAS
CSCD
北大核心
1993年第9期A388-A392,共5页
Acta Metallurgica Sinica
基金
国家自然科学基金
关键词
镍基合金
定向凝固
碳化物
分形
fractal dimension
MC type carbide
directional solidification
superalloy