基于流变学的初生固相定量表征  

Quantitative metallographic analysis for the solid phase in a semisolid alloy melt based on the rheology

作　　者：邢书明[1] 鲍培玮[1] 刘文[2] 

机构地区：[1]北京交通大学机电学院,北京100044 [2]浙江大学宁波理工学院机电与能源工程分院,宁波315100

出　　处：《中国体视学与图像分析》2010年第1期54-58,共5页Chinese Journal of Stereology and Image Analysis

摘　　要：根据初生固相的形貌、尺寸和数量对半固态合金熔体流变性能的影响作用,提出了对半固态合金熔体初生固相的定量表征方法。该方法首先对初生固相颗粒边界进行平滑处理、对聚集或粘连在一起的初生固相颗粒进行分离以及根据设定的阈值筛选并剔除取样过程形成的小颗粒,然后再利用图像分析软件统计计算半固态合金熔体中初生固相的体积分数、尺寸大小和圆整度等微观结构参量。利用这一方法得到的半固态合金熔体中初生固相的特征参数为半固态合金熔体的微观流变学研究提供了可靠的数据。According to the effects of solid phase on the rheology of the semisolid alloy melt,a new method is presented to calculate the characteristic parameters of the solid phase in a semisolid melt.There are two steps in the method.The first step is to modify the solid figure such as smoothing the boundary of the solid grain,separating the coalescent grains,and eliminating the small grain formed in the sampling process.The second step is to calculate the microstructure parameters such as average diameter,volume fraction and the shape coefficient of the solid grains.To obtain these parameters are very important to explore the micro-rheology of the semisolid alloy.

关 键 词：半固态熔体 定量金相 流变学 

分 类 号：TG249.9[金属学及工艺—铸造]