Quantitative stereology of martensite microstructure by 3D visualization for improving material reliability

三维可视化表明，马氏体包呈之字形，具有特定的习惯面，块呈之字形。所有观察到的包到达一个先前的奥氏体边界。初步尝试了用格、欧拉特征、高斯曲率和平均曲率等参数对三维图像进行量化，结果表明，这些拓扑或微分几何参数似乎对表征金属的微观结构很有用。

3D visualization demonstrates that martensite packet is zigzagged and has a specific habit plane, and block is zigzagged. All packets observed reach to a prior austenite boundary.Preliminarily, quantification of 3D image was attempted using a parameter such as genus, Euler characteristic, Gauss curvature and mean curvature, which suggested that those topological or differential geometrical parameters seems to be useful to characterize microstructures in metals.