合金钢强韧化热处理组织结构高通量高分辨率三维重建

Based on distance correlation functions, the three-dimensional (3D) microstructure from a single 2D micrograph of the cable socket used 40Cr steel after quenching and the aerospace high-speed, heavy-load transmission part used 18Ni steel after low-temperature rare-earth heat treatment was reconstructed. The results show that the resolution of this method depends on the two-dimensional image of the structure, so it can achieve ultra-high resolution. In addition, the proposed multi-stage reconstruction algorithm exceeds the limit of domain size (150³) of the traditional algorithm, and can accomplish 3D reconstruction with 200³ voxels in an acceptable duration, so it has high throughput characteristics. This method provides a simple and easy-to-use way to characterize the microstructure of alloy steel, which is between two-dimensional stereology and three-dimensional imaging.