(1. 西北工业大学 材料学院，西安 710072；
2. 西北有色金属研究院，西安 710016；
3. 宝山钢铁股份有限公司 特殊钢分公司，上海 200940)
摘 要: 基于体视学方法，结合计算机图形处理，建立一套钛合金显微组织定量测量和表征的方法。对钛合金中片层和等轴两类典型组织进行定量表征，其参数包括：片层α的厚度、体积分数、形态、取向，初生α相尺寸、体积分数，总α相体积分数。分析实例表明，建立的钛合金显微组织定量表征方法精度高、重现性好，为后续建立显微组织—力学性能预测模型奠定了基础。
关键字: 两相钛合金；体视学；显微组织；定量分析
（1. School of Materials Science and Engineering, Northwestern Polytechnical University, Xi’an 710072, China；
2. Northwest Institute for Nonferrous Metal Research, Xi’an 710016, China；
3. Special Steel Branch, Baoshan Iron & Steel Co., Ltd., Shanghai 200940, China）
Abstract:Based on the three-dimensional stereology and graphics softwares, a process for quantifying the microstructure of (α+β) titanium alloys was developed, the parameters include, thickness, volume fraction, morphology, and orientation of α-laths, colony size, grain size, colony size, Feret ratio of α-laths, mean diameter and volume fraction of primary α phase. The developed models and methods are verified with some examples. The results show that the process is fairly accurate to build a robust expert system to model the correlation between the microstructure and property of titanium alloys.
Key words: titanium alloy; stereology; microstructure; quantitative analysis
