钢材 用点网格统计估计成分体积分数的点计数方法

[中文适用范围]： 本文件规定了一种点计数法，用于通过点网格统计估计钢中某一成分的体积分数。该方法适用于可清晰识别的成分。默认情况下，计数是手动执行的，但可以由计算机辅助或由经过验证的计算机算法替代。注：在本文件中，“成分”一词可以表示一个相，也可以表示由两个或多个相组成的微观成分。 [外文原描述]： This document specifies a point counting method for statistically estimating the volume fraction of a constituent through the microstructure of a steel by means of a point grid. It applies to constituents which are clearly identifiable. By default, counting is performed manually, but can be computer assisted or substituted by validated computer algorithms. NOTE In this document, the word "constituent" can designate a phase as well as a micrographic constituent composed of two or more phases.