钢金相图像中晶粒度的估算方法

晶粒度估算是金属性能分析的重要基础。对钢金相图像中晶粒的晶粒度、面积、平均面积、弦、长轴、短轴、直径和平均直径进行了定义,提出用填充剔除计数法进行晶粒颗数的统计,给出了一个晶粒平均面积和平均直径的估算公式。最后,给出了一个晶粒直径计算算法。描述的晶粒度估算方法改进了从前的粗略估算方法,使计算精确度获得极大的提高,为金相图像的更深入分析,如对金属晶粒度的评级、机械性质的分析等提供了很大的帮助。

The Estimate Methods of Grain Size in Steel Metallographical Image

The estimate of grain size is the important base of metallographical analysis.The definitions of grain size,area,average area,chord,long axes,short axes,diameter and average diameter are given in this article.A filling-elimination method is also produced for counting the number of grains in the metallographical image.The equations for calculating average area and diameter of grains are presented too.Finally,an algorithm for calculating grain's average diameter is given.The estimate methods of grain size in steel metallographical image described in this article improve upon the calculating precision of former wide approach,and also are very helpful for more deep analysis of steel metallographical image such as the grain level evaluation,mechanical property and so on.